ACH
Last reviewed 2026-05-11 by Asad Ali, Founder & CEO
Automated Clearing House — an electronic network for batched bank-to-bank transactions.
ACH (Automated Clearing House) is the US electronic payments network operated by Nacha and the Federal Reserve's FedACH service that processes batched bank-to-bank transactions. ACH handles direct deposits of payroll (credit entries), customer bill payments (debits), tax payments (EFTPS uses ACH), vendor payments, and recurring subscriptions. Standard ACH transactions settle next business day; same-day ACH (available since 2016 and expanded to three settlement windows daily) settles on the same business day for a small surcharge. ACH limits per transaction were raised to $1 million in March 2022. ACH is cheaper than wires (typically $0–$1 per transaction versus $15–$45 for wires) and offers consumer reversal rights for 60 days under Regulation E for personal accounts (commercial accounts have shorter dispute windows under the Uniform Commercial Code and bank agreement terms — usually two business days). ACH originators must obtain proper authorization from the receiving party (signed agreement for B2B; web/phone authorization with verification for consumers under Nacha Operating Rules). NSF/return fees apply when an ACH bounces; recurring high return rates can result in bank termination.
Formula
ACH Cost Per Transaction = $0.20–$1.50 (varies by bank and volume). Same-Day ACH Surcharge = $0.50–$2.00 above standard ACH. Wire Transfer Cost = $15–$45 — ACH is 90–95% cheaper for the same money movement when same-day settlement is not required.Example
A small business pays its 10 employees via ACH direct deposit on payday Friday. The payroll processor initiates a batched ACH credit file on Wednesday for $42,000 total ($4,200 per employee on average). The bank debits the business account on Thursday and ACH credits each employee's personal bank account on Friday morning. Total ACH cost for the batch ≈ $5–$10 from the payroll provider versus $250+ for the equivalent wire transfers. Separately, the business collects $18,000 in monthly customer subscription payments via ACH debit (with authorized recurring agreements on file), at a typical processing cost of $0.25–$0.75 per transaction.
Why It Matters for Your Business
ACH is the most cost-effective way to send and receive recurring payments — switching payroll, customer collections, and vendor payments from paper checks or wires to ACH typically saves thousands annually while reducing fraud and reconciliation work.
Practical Tips
- •Move payroll, vendor payments, and customer subscriptions to ACH to reduce per-transaction cost by 90%+ versus checks or wires
- •For B2B collections, require signed ACH authorization agreements specifying amount, frequency, and notice for changes — Nacha's WEB and TEL authorization rules apply to consumer pulls
- •Monitor ACH return rates monthly — Nacha caps unauthorized return rates at 0.5% and overall return rates at 15%, with bank consequences for exceeding either
- •Use ACH Positive Pay or block-and-allow lists to prevent unauthorized ACH debits to your business account — corporate ACH fraud disputes have only a 2-business-day window
Common Questions About ACH
How is ach calculated?
The formula is: ACH Cost Per Transaction = $0.20–$1.50 (varies by bank and volume). Same-Day ACH Surcharge = $0.50–$2.00 above standard ACH. Wire Transfer Cost = $15–$45 — ACH is 90–95% cheaper for the same money movement when same-day settlement is not required.. See the worked example below for a step-by-step calculation using realistic numbers.
What is an example of ach?
A small business pays its 10 employees via ACH direct deposit on payday Friday. The payroll processor initiates a batched ACH credit file on Wednesday for $42,000 total ($4,200 per employee on average). The bank debits the business account on Thursday and ACH credits each employee's personal bank account on Friday morning. Total ACH cost for the batch ≈ $5–$10 from the payroll provider versus $250+ for the equivalent wire transfers. Separately, the business collects $18,000 in monthly customer subscription payments via ACH debit (with authorized recurring agreements on file), at a typical processing cost of $0.25–$0.75 per transaction.
Why does ach matter for my business?
ACH is the most cost-effective way to send and receive recurring payments — switching payroll, customer collections, and vendor payments from paper checks or wires to ACH typically saves thousands annually while reducing fraud and reconciliation work.
How does FiscalInsights help with ach?
FiscalInsights tracks ach automatically as part of its AI bookkeeping workflow. Connect your bank accounts and the platform handles categorization, reconciliation, and reporting without manual entry.
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