How ACH Payments Work: The Complete Guide to the U.S. Electronic Payment Network

Last Updated: April 2026 | 14-minute read

By Dale Erling 15+ years of payments & fintech experience 

Executive Summary

The ACH Network is the electronic payment system that moves money between virtually every bank and credit union in the United States. In 2025, it processed 35.2 billion payments valued at $93 trillion, averaging 141 million transactions per day. For businesses, ACH is the lowest-cost way to collect recurring payments, pay vendors, and process payroll. For consumers, it powers the direct deposits, autopay arrangements, and online bill payments that most people use without knowing the name of the network behind them.

This guide explains how the ACH Network actually works at the infrastructure level: who the participants are, what happens between the moment a payment is initiated and when funds settle, how Same Day ACH changes the timing equation, and what the 2026 Nacha fraud monitoring rules require of businesses that originate payments. If you are evaluating ACH for your business or want to understand why your ACH transactions take the time they do, this is the resource you need.

Quick answers for those scanning:

• ACH stands for Automated Clearing House, a U.S. electronic funds transfer network
• Standard ACH settles in 1 to 3 business days; Same Day ACH settles within hours
• There are two ACH operators: the Federal Reserve (FedACH) and The Clearing House (Electronic Payments Network)
• ACH is governed by Nacha, a nonprofit that sets and enforces the rules
• ACH processing fees range from $0.20 to $1.50 per transaction, versus 1.5% to 3.5% for credit cards
• New Nacha fraud monitoring requirements took effect March 20, 2026, with additional rules extending to all non-consumer participants by June 22, 2026

What Is the ACH Network?

The Automated Clearing House Network is a nationwide batch-processing electronic funds transfer system operated under rules established by Nacha. It is the backbone of U.S. domestic electronic payments, connecting every bank and credit union in the country and enabling direct movement of funds between accounts without requiring paper instruments, card networks, or wire infrastructure.

The network has existed in various forms since the early 1970s, when regional clearing houses began developing electronic alternatives to paper checks. It became a national system in 1978. Same Day ACH capability was added in 2016, and the per-payment Same Day limit was raised to $1 million in March 2022. According to Nacha, 2025 marked the 13th consecutive year in which the total value of ACH payments increased by at least $1 trillion.

The scale of ACH usage in everyday American life is striking. Approximately 93% of U.S. workers receive pay through the ACH Network. Some 90.6% of Americans who received a federal tax refund this year chose ACH direct deposit. Nearly 99% of Social Security payments use the ACH Network. These are not niche statistics; they describe the payment rail that underpins modern financial life for most Americans.

For businesses, the relevant applications are direct deposit of payroll, recurring billing, one-time bill payments, vendor payments, and business-to-business (B2B) transfers. B2B ACH volume grew 9.9% in 2025 to reach 8.1 billion payments, reflecting a continuing shift away from paper checks that has accelerated since the pandemic.

The Four Parties in Every ACH Transaction

Every ACH payment involves exactly four roles, regardless of the payment type or dollar amount. Understanding these roles is essential to understanding how the network functions and where delays or errors can occur.

The Originator is the business or individual who initiates the payment. For a payroll direct deposit, the employer is the Originator. For a recurring utility bill debit, the utility company is the Originator. For a consumer paying a bill online, that consumer is the Originator of an ACH credit. The Originator bears the primary responsibility for obtaining valid authorization before initiating any ACH entry.

The Originating Depository Financial Institution (ODFI) is the Originator’s bank or credit union. The ODFI accepts payment instructions from the Originator, validates them against Nacha’s technical standards, and transmits them into the ACH Network. The ODFI has a formal agreement with one of the two ACH Operators and is legally responsible to Nacha for the transactions it sends. Not every financial institution chooses to be an ODFI because of the associated compliance requirements. Most businesses access ODFI functionality through their bank or through a third-party payment processor that has an ODFI relationship.

The ACH Operator is the central clearing facility that receives batched payment files from ODFIs, sorts the individual entries by destination bank routing number, and routes them to the appropriate receiving institutions. There are exactly two ACH Operators in the United States: the Federal Reserve Bank (operating as FedACH) and The Clearing House (operating as the Electronic Payments Network, or EPN). The two operators are fully interoperable and exchange files with each other multiple times each day, which is why a payment originating at a bank that uses FedACH can reach an account at a bank that uses EPN without any action required from the parties involved.

The Receiving Depository Financial Institution (RDFI) is the bank that holds the destination account. The RDFI receives sorted ACH entries from the Operator, posts them to the appropriate customer accounts, and handles returns when a transaction cannot be completed. All financial institutions must participate as RDFIs to allow their customers to receive ACH payments. The ODFI and RDFI can be the same institution; when they are, the transaction does not need to travel through an ACH Operator.

The payment’s ultimate recipient is called the Receiver. This is the person or business whose account balance changes when the transaction posts. In a direct deposit, the employee is the Receiver. In an automatic bill payment, the consumer is the Receiver.

Important terminology note: The terms “originating” and “receiving” refer to the direction of the ACH request, not necessarily the direction of money movement. In an ACH debit (a pull transaction), the Originator requests that funds be pulled from the Receiver’s account. The money ends up at the Originator’s account at the ODFI, even though the RDFI is described as “receiving” the ACH entry.

How ACH Payments Are Processed: The Complete Lifecycle

A single ACH payment travels through six distinct phases between initiation and final settlement.

Phase 1: Authorization Before any funds move, the Originator must obtain authorization from the Receiver. For ACH debits, this is a legal requirement enforced by Nacha. Authorization can be provided in writing, electronically, or via recorded telephone consent, depending on the Standard Entry Class (SEC) code used. For internet-initiated transactions using the WEB SEC code, Nacha requires the Originator to use a commercially reasonable method to validate the account before the first live transaction. For a full reference to SEC codes used in ACH processing, see IntelliPay’s ACH SEC Codes Glossary.

Phase 2: Payment Initiation and File Creation The Originator submits payment instructions to its ODFI, either directly through banking software or through a third-party processor. These instructions are assembled into a Nacha-formatted ACH file. The file has a rigid structure that includes header records identifying the originating institution, batch records grouping transactions by SEC code and company, individual entry records for each payment, and trailer records that verify the total count and dollar amount of every entry in the file. If the trailer totals do not match the entries, the entire file is rejected by the Operator.

Phase 3: ODFI Batching and Submission The ODFI collects ACH files from multiple originators throughout the day and submits them to its ACH Operator during designated processing windows. For Same Day ACH, there are three submission windows per business day. For standard ACH, there are additional windows for next-day and future-dated entries. Missing a cutoff time does not cancel the payment; it delays it to the next available processing window.

Phase 4: Operator Sorting and Routing The ACH Operator receives batch files from many ODFIs simultaneously. It validates the file structure, breaks apart the batches, and sorts each individual entry by destination routing number to determine which RDFI should receive it. This sorting function is what enables the system to handle billions of transactions efficiently. The sorted entries are then made available to the appropriate RDFIs.

Phase 5: RDFI Posting The RDFI receives the ACH entries destined for its customers. For ACH credit entries (like payroll), Nacha rules require the RDFI to make funds available to the Receiver no later than 9:00 a.m. in the RDFI’s local time on the settlement date. For ACH debits, the RDFI processes the debit to the Receiver’s account. If the transaction cannot be completed (due to insufficient funds, a closed account, or other conditions), the RDFI initiates a return.

Phase 6: Settlement Settlement is the actual transfer of money between financial institutions at their Federal Reserve accounts. For standard ACH, settlement typically occurs one business day after the initial processing date. Federal Reserve holidays and weekends pause the clearing process entirely. This is the primary reason an ACH transaction initiated on a Friday afternoon after a bank’s cutoff time may not settle until the following Tuesday.

ACH Credits vs. ACH Debits

Every ACH transaction is classified as either a credit or a debit. The distinction describes the direction funds move and determines which party controls the initiation of the transaction.

ACH Credits (Push Transactions): The Originator pushes funds from its own account to the Receiver’s account. The Originator controls the timing and amount. Common applications include direct deposit of payroll, vendor payments from a business to a supplier, tax refunds from government agencies, and person-to-person transfers. In an ACH credit, money moves from the ODFI to the RDFI.

ACH Debits (Pull Transactions): The Originator pulls funds from the Receiver’s account and deposits them into the Originator’s account. The Receiver must have authorized this in advance. Common applications include recurring subscription billing, mortgage and loan payments, utility autopay, membership dues, and insurance premium collection. In an ACH debit, money moves from the RDFI to the ODFI.

The authorization requirements differ between credits and debits. ACH debits require explicit, documented authorization from the Receiver before the first transaction because the Originator is accessing someone else’s account. ACH credits require less friction since the Originator is sending funds it controls.

Same Day ACH: Processing Windows and Settlement Times

Same Day ACH was introduced in 2016 and has grown dramatically. In 2025, 1.4 billion Same Day ACH payments were processed with a value of $3.9 trillion, representing a 16.7% volume increase and a 21.4% value increase from 2024. Same Day ACH payments averaged 5.8 million per day in 2025 and reached a peak of 7.8 million per day in December.

The practical value for businesses is that Same Day ACH allows payments to settle on the same business day they are initiated, rather than requiring one to three business days. The per-payment limit is $1 million, making it viable for a wide range of B2B and consumer payment scenarios.

The three Same Day ACH processing windows operate as follows:

An important operational note: your bank or payment processor may impose earlier cutoff times than the ACH Operator’s deadlines because they need time to assemble and transmit the file before the Operator’s window closes. A Same Day ACH payment submitted after your processor’s applicable cutoff will not be processed Same Day; it will fall back to next-day settlement. Verify your processor’s cutoff schedule when time-sensitive payments are involved.

Standard ACH (non-Same Day) fees are significantly lower, making it preferable for predictable, recurring transactions where same-day settlement is not required. Same Day ACH fees are typically double standard ACH fees, but remain a fraction of wire transfer or card processing costs.

How ACH Batch Processing Works

One of the most common points of confusion about ACH is why payments take as long as they do. The answer lies in batch processing. Unlike credit card transactions, which are authorized in real time, ACH transactions are not processed individually. They are collected over a period of time, assembled into batch files, and submitted to the Operator at scheduled intervals.

This batching model is what makes ACH so cost-efficient. Processing millions of transactions in bulk, rather than one at a time, reduces per-transaction infrastructure costs significantly. It is the primary reason ACH fees are measured in cents rather than percentages.

From a business operations standpoint, batch processing means that the time of day a payment is initiated matters. Every ODFI and processor has cutoff times for each processing type (Same Day, next day, future-dated). Transactions submitted before the cutoff are included in the current cycle; those submitted after are queued for the next cycle. For high-volume billing operations, knowing your processor’s cutoff times and structuring payment runs around them is a practical way to improve cash flow predictability.

ACH Authorization Requirements

Authorization is not optional in ACH, and it is not informal. Nacha rules define specific requirements for how authorization must be obtained, what it must contain, and how records must be retained.

For ACH Debit Entries (PPD, CCD, WEB):

A Prearranged Payment and Deposit Entry (PPD) authorization must be in writing, must be signed or similarly authenticated by the Receiver, must clearly state it authorizes ACH debits to the identified account, and must specify whether the authorization is for a single entry or recurring entries.

A Corporate Credit or Debit (CCD) authorization governs business-to-business transactions and must meet similar standards, adapted for corporate accounts.

For internet-initiated entries using the WEB SEC code, Nacha requires that the Originator use a commercially reasonable fraud detection system to screen for fraudulent transactions and, prior to initiating the first entry for a new account, verify the account using a method such as micro-deposit verification or account validation service.

Account Validation Methods:

Two primary methods exist for validating that a bank account is open and capable of receiving ACH entries before the first live transaction:

A prenote (prenotification) is a zero-dollar test entry submitted through the ACH Network prior to the first live entry. If the RDFI does not return it within approximately three business days, the account is considered valid. Prenotes verify account existence but not necessarily account ownership.

Micro-deposit verification sends two small deposits (typically under one dollar each) to the Receiver’s account. The Receiver confirms the exact amounts to prove they control the account. This method takes one to three business days but verifies both account existence and account ownership, making it preferable for situations where fraud risk is elevated.

Maintaining proper authorization records is not only a compliance requirement but also your primary defense if a Receiver disputes a transaction. Authorization records should be retained for at least two years after the termination or revocation of the authorization.

ACH Security and the 2026 Nacha Fraud Rules

ACH transactions are protected by multiple layers of security. All ACH data is encrypted in transit and at rest. Nacha’s Operating Rules impose authorization requirements, return rate thresholds, and account validation mandates that create structural barriers to unauthorized use. However, ACH fraud does occur, primarily through phishing attacks that capture routing and account numbers and through business email compromise schemes that redirect legitimate payment instructions to fraudulent accounts.

New Nacha Fraud Monitoring Requirements (2026)

Nacha has implemented a significant new fraud management framework that took effect in phases beginning March 20, 2026. These rules represent the most substantial update to ACH fraud controls in decades.

Effective March 20, 2026, large payment originators and third-party service providers are required to implement active fraud monitoring for ACH payments they originate. Large receiving financial institutions must begin monitoring ACH credit entries for signs of fraud.

Effective June 22, 2026 (the practical date, since June 19 is a federal holiday), these requirements extend to all non-consumer participants in the ACH Network. This means virtually every business that originates ACH payments through a processor needs to have a risk-based fraud monitoring framework in place.

The rules do not mandate a specific technology but require a risk-based approach that includes fraud detection, account validation, and risk mitigation procedures proportionate to the Originator’s payment volume and risk profile.

For businesses that process ACH payments through IntelliPay, these compliance obligations are built into the platform. IntelliPay’s ACH web validation process runs account verification on first-time bank accounts, comparing name, routing number, and account number against historical records to return approvals or declines before a transaction enters the network.

Operational Best Practices for ACH Security:

Implementing ACH positive pay (allowing only pre-approved transactions to post) is one of the most effective controls available. ACH debit blocks prevent unauthorized pulls from your business account. Requiring dual authorization for large ACH transactions reduces internal fraud exposure. Monitoring return rates is both a compliance requirement and an early indicator of potential fraud or data quality issues.

ACH vs. Other Payment Methods

Understanding where ACH fits in the broader payment landscape requires comparing it honestly against the alternatives businesses use.

ACH vs. Credit Cards

Credit cards process in real time and offer chargeback protections that some consumers prefer. For businesses accepting consumer payments, card processing fees typically range from 1.5% to 3.5% of the transaction value plus a per-transaction fee. On a $500 transaction, card fees might reach $12 to $18. The same transaction via ACH might cost between $0.20 and $1.50.

The cost differential becomes dramatic at scale. A business running $100,000 per month in recurring payments through card processing could spend $2,500 to $3,500 per month in fees. Routing the same volume through ACH could reduce that to under $150 per month, even at premium pricing.

Cards remain preferable for one-time in-person transactions, situations where the consumer needs credit, and international payments. ACH is preferable for recurring billing, large-dollar B2B payments, and any situation where the payer has an ongoing relationship with the payee.

For businesses that offer both options, IntelliPay’s dual pricing and cash discount programs allow merchants to present the cost difference transparently and let customers choose, rather than absorbing card fees on every transaction.

ACH vs. Paper Checks

Paper checks are the direct predecessor to ACH and their replacement is well underway. According to the Association for Financial Professionals, check use in B2B payments declined from 81% of transactions in 2004 to just 26% in 2024. Checks carry substantial fraud risk: the American Bankers Association has documented that check fraud accounted for 47% of deposit account losses pre-pandemic. Processing checks involves labor costs for handling, deposit preparation, and reconciliation that ACH eliminates.

ACH vs. Wire Transfers

Wire transfers settle in hours, are irrevocable once sent, and can support international transactions. They cost $10 to $50 per transaction. ACH is not irrevocable in the same way (returns are possible within defined windows), is primarily domestic, and is dramatically cheaper. Wire transfers make sense for large, time-critical, or international transactions. ACH makes sense for virtually everything else.

ACH vs. Real-Time Payments (RTP and FedNow)

Real-time payment rails like The Clearing House’s RTP and the Federal Reserve’s FedNow settle in seconds, around the clock, including weekends and holidays. They are irrevocable once sent and are well-suited for time-sensitive consumer disbursements. However, they are not yet universally available across all financial institutions, and not all use cases require instant settlement. ACH remains the cost-efficient standard for scheduled, recurring, and batch payment flows. Nacha has positioned ACH and real-time rails as complementary rather than competitive, and many payment programs use both depending on the urgency of individual transactions.

ACH Return Codes and What They Mean for Your Business

When an ACH payment cannot be completed, the RDFI returns it to the ODFI with a three-digit return code that specifies the reason. These codes are defined by Nacha and are standardized across all financial institutions. The ODFI then notifies the Originator.

Return rates matter beyond the individual failed transaction. Nacha has established return rate thresholds, and consistently exceeding them can trigger a compliance review. The threshold for unauthorized debit returns (Nacha return code R10) is 0.5% of ACH debit entries. The threshold for administrative returns (codes R02, R03, and R04 combined) is 3% of debit entries. High return rates signal either data quality problems or, in worse cases, patterns of unauthorized origination.

For a complete reference, IntelliPay maintains a merchant guide to ACH reject and return codes that includes descriptions, account types, and correction guidance for each code.

The most operationally significant return codes for businesses:

R01 (Insufficient Funds): The Receiver’s account lacks the funds to cover the transaction. This is the most common return. Best practice is to retry once after notifying the customer, following Nacha’s retry rules, which limit the number of retries for the same payment authorization.

R02 (Account Closed): The account exists but has been closed. The customer must provide updated banking information. This code counts against the administrative return threshold.

R03 (No Account / Unable to Locate Account): The routing and account numbers provided do not match an active account at the RDFI. This often indicates a data entry error during enrollment. Account validation before initiating the first live transaction prevents most R03 returns.

R04 (Invalid Account Number Structure): The account number format does not conform to the required structure. A data quality issue, often caught by account validation.

R07 (Authorization Revoked): The Receiver notified their bank that they have revoked authorization. This requires immediate cessation of further debits to that account under the same authorization.

R10 (Customer Advises Not Authorized): The Receiver states they did not authorize the transaction. This is a serious return code. It counts against the 0.5% unauthorized return threshold and requires that the Originator review its authorization documentation and processes.

R29 (Corporate Customer Advises Not Authorized): The business equivalent of R10, applicable to CCD and CTX transactions. Subject to the same threshold monitoring.

Understanding your return code patterns is one of the most actionable things a business can do to improve ACH performance. A spike in R01 returns may indicate billing timing issues. Frequent R03 and R04 returns point to enrollment data quality problems that account validation would resolve. Elevated R07 or R10 returns require immediate review of authorization practices.

ACH by Industry: Where It Makes the Most Business Sense

ACH is not a universal replacement for all payment types. Its advantages are most pronounced in specific business contexts.

Utilities and Municipal Governments

Recurring monthly billing with large, stable customer bases is an ideal fit for ACH. The combination of predictable payment amounts, established customer relationships, and the significant cost difference between ACH and card processing makes ACH the standard for utility autopay programs. IntelliPay serves utilities and government agencies with ACH and eCheck processing integrated into billing platforms, including dual pricing options that allow customers to see the cost of paying by card versus ACH.

Property Management

Monthly rent collection via ACH eliminates the check-handling burden for property managers and reduces late payments by automating the collection cycle. ACH is particularly valuable for property managers handling multiple properties or units, where the administrative cost of processing paper checks at scale is substantial.

Healthcare

Healthcare organizations use ACH for both collections (patient payment plans and recurring premium billing) and disbursements (insurance claim payments to providers). According to Nacha, healthcare claim payments via ACH neared 548 million in 2025, up 7.3% year over year. The shift from paper explanation of benefits (EOB) checks to ACH EFT remittance is a documented cost reduction for providers of all sizes.

Unions and Membership Organizations

Dues collection via ACH reduces administrative overhead and improves collection rates compared to invoicing and check-based models. Membership organizations with predictable monthly or annual dues cycles are natural candidates for ACH autopay programs. For more on payment options for unions, see IntelliPay’s Unions industry page.

Insurance

Premium collection for recurring policies is one of the original ACH use cases. Monthly or annual premium debits from policyholder accounts, combined with claim disbursements via ACH credit, make the insurance vertical one of the highest ACH adoption segments in the U.S.

Small Business B2B Payments

As Nacha data shows, B2B ACH volume has grown nearly 10% annually for several years running. Small and mid-sized businesses using ACH for vendor payments eliminate the check fraud risk, reduce processing time, and lower per-transaction costs compared to card-based B2B payment programs. For small businesses evaluating payment infrastructure, IntelliPay’s integrated payment solutions include ACH processing alongside card acceptance in a single platform.

Frequently Asked Questions

What does ACH stand for? ACH stands for Automated Clearing House. It refers to the electronic payment network that moves funds between U.S. bank accounts, as well as to the transactions processed on that network. It is governed by Nacha, the nonprofit organization that writes and enforces the operating rules.

How long does an ACH payment take? Standard ACH payments typically settle in one to three business days. Same Day ACH payments settle within hours, with three processing windows available each business day. Settlement timing depends on when the payment is initiated relative to the ODFI and processor cutoff times, and does not include weekends or federal holidays.

What is the difference between ACH and a wire transfer? ACH is a batch-processing network optimized for recurring, scheduled, and bulk domestic payments. It settles in one to three business days for standard ACH, or same day for Same Day ACH. Wire transfers settle in hours, are irrevocable, and cost $10 to $50 per transaction. ACH is not irrevocable in the same way: returns are possible within defined windows. Wire transfers are appropriate for large, time-critical, or international transactions. ACH is more cost-efficient for the vast majority of domestic business payment needs.

What is the difference between ACH and eCheck? An eCheck (electronic check) is a specific type of ACH transaction. It processes through the ACH Network using the same infrastructure, but the payment is presented in a check-like format, typically initiated by capturing routing and account numbers from a paper check or from a digital check image. All eChecks are ACH transactions, but not all ACH transactions are eChecks. For a detailed explanation of eCheck processing, see IntelliPay’s Electronic Check Processing guide.

What is Same Day ACH? Same Day ACH is a capability within the ACH Network that allows payments of up to $1 million to settle on the same business day they are initiated. It was introduced in 2016 and has grown rapidly. In 2025, Same Day ACH processed 1.4 billion payments valued at $3.9 trillion. Three processing windows per business day are available, with settlement times ranging from 1:00 p.m. to 9:00 a.m. the next morning depending on the window. Same Day ACH fees are higher than standard ACH but remain well below wire transfer costs.

Can ACH payments be reversed? ACH debits can be returned within defined time windows if the Receiver disputes the transaction or if a processing error occurs. Unauthorized consumer debits can be disputed within 60 days. Reversals for errors (wrong amount, duplicate entry, wrong account) must be initiated within five banking days of the settlement date of the original entry. ACH is not as easily reversed as a credit card chargeback, but it is not irrevocable in the way that wire transfers are.

What are ACH return codes? Return codes are standardized three-digit codes that the RDFI uses to explain why an ACH transaction was returned. Common examples include R01 (insufficient funds), R02 (account closed), R03 (no account found), and R10 (customer advises not authorized). Return codes trigger operational responses from the Originator and affect Nacha compliance metrics. A full reference is available in IntelliPay’s ACH return code resource.

What is Nacha and what role does it play? Nacha is the nonprofit organization that governs the ACH Network. It writes and maintains the Nacha Operating Rules, which define the roles, responsibilities, and technical requirements for every participant in the network. Every bank, credit union, and third-party processor that uses the ACH Network is bound by these rules. Nacha also conducts enforcement, releases quarterly volume statistics, and develops the rule changes that expand ACH capabilities over time.

Are ACH payments secure? ACH payments are governed by Nacha’s Operating Rules, which include mandatory encryption, authorization requirements, account validation standards, and return rate monitoring. They are significantly more secure than paper checks, which are the payment type most vulnerable to fraud. New fraud monitoring requirements effective in 2026 require ACH Originators to implement active fraud detection frameworks. Best practices for merchants include account validation before the first transaction, ACH debit blocks on accounts that do not initiate ACH debits, dual authorization controls, and return rate monitoring.

What are Standard Entry Class (SEC) codes? SEC codes are three-letter codes that classify how an ACH transaction was authorized. They determine which Nacha rules apply to the transaction. Common SEC codes include PPD (prearranged payment from a consumer account), CCD (corporate credit or debit), WEB (internet-initiated consumer entry), and TEL (telephone-initiated entry). Every ACH transaction must include a valid SEC code. For a complete glossary, see IntelliPay’s ACH SEC Codes Glossary.

How do I start accepting ACH payments for my business? Accepting ACH payments requires establishing a relationship with an ODFI directly or through a third-party payment processor that has that relationship. You will need a business bank account, a method for collecting customer bank account and routing numbers, a Nacha-compliant authorization process, and account validation capabilities for internet-initiated transactions. A payment processor like IntelliPay can provide all of these capabilities in a single integrated platform that also supports card payments, so you do not need separate systems for each payment type.

Ready to add ACH to your payment mix or upgrade your existing setup? Talk to an IntelliPay payment specialist for a cost comparison and a demo of how ACH integrates with your existing systems.

Sources and Further Reading

• Nacha: How ACH Payments Work
• Nacha: ACH Network Volume and Value Statistics
• Nacha: ACH Payments Fact Sheet
• Nacha: ACH Developer Guide
• Nacha: Operating Rules and Rule Changes

Legal Disclaimer

This article is provided for general informational purposes only and does not constitute legal, financial, or compliance advice. ACH rules and regulations, including Nacha Operating Rules, are subject to change. Businesses should consult qualified legal and compliance counsel to ensure their ACH payment programs meet applicable requirements. IntelliPay is a registered ISO/MSP of Citizens Bank, Providence, RI, and Synovus Bank, Columbus, GA.