Support Guide
A practical comparison of ACH and wire transfers — how each works, when to use which, typical costs, settlement times, and routing number requirements.
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Bank Details
Paste full bank details — routing number (ABA) and account will be detected automatically.
This tool validates format only. It does not verify whether the bank account exists or can receive payments.
ACH (Automated Clearing House) transfers are processed by the ACH Network, operated by Nacha. Rather than routing each payment individually, ACH batches thousands of transactions together and settles them in bulk — typically several times per business day. Standard ACH transfers settle in 1–3 business days. Same-Day ACH can settle on the same business day if submitted before certain cut-off times.
Common ACH use cases include: direct deposit payroll, Social Security payments, IRS tax refunds, recurring bill payments (mortgage, utilities, subscriptions), and peer-to-peer payments via apps like Venmo or Zelle. ACH is also used for direct debit — where a business pulls funds from your account for monthly fees.
ACH transfers are low cost — typically free for personal use and a few cents to a few dollars per transaction for businesses. Standard ACH is reversible within a defined window, providing buyer protection.
A wire transfer is a real-time gross settlement payment that moves funds individually and irrevocably. Domestic US wire transfers settle through the Fedwire Funds Service or CHIPS. Once a wire settles, it cannot be reversed — this finality is both its primary advantage and primary risk.
Domestic wire transfers typically settle within a few hours on the same business day if submitted before the bank's cut-off time. International wire transfers route through SWIFT and may take 1–3 business days.
Wire transfers cost significantly more than ACH — typical domestic fees range from $15 to $30 per outgoing wire. International wires can cost $35 to $50 or more, plus potential fees from correspondent banks.
Many large US banks use different routing numbers for ACH transactions vs wire transfers. Using an ACH routing number for a wire transfer, or vice versa, is a common cause of failed or misdirected payments.
For international wire transfers, SWIFT BIC codes are required instead of (or in addition to) ABA routing numbers. If you are sending money internationally, confirm with your bank whether a routing number or SWIFT BIC is required.
When in doubt about which routing number to use, call your bank and ask specifically: 'What is the routing number for incoming [ACH / domestic wire / international wire] payments?' This 30-second call prevents the most common cause of misdirected transfers.
Once a domestic wire settles through Fedwire, it is generally irrevocable. If an error occurs before settlement, your bank may be able to request a recall. For international wires, recalls are possible but not guaranteed.
Yes — direct deposit is a type of ACH credit transfer. Your employer sends an ACH credit to your bank account using your routing number and account number.
Often not for large banks. Many major US banks use one routing number for ACH and a different one for wire transfers. Always verify the correct routing number for your specific transaction type.
This tool checks format only. It validates routing number structure and ABA checksum, but does not confirm that a bank account exists, is active, belongs to a person, or can receive payments. It does not perform financial, identity, or bank verification.
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Everything you need to know about ABA routing transit numbers — their structure, history, how they are assigned, and how they differ from account numbers.
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IBAN vs ABA Routing Number — International vs US Bank Transfers
A complete comparison of IBANs and ABA routing numbers — what each identifies, where each is used, and how to determine which one you need for a payment.
Use the main validator when you need a fast structural check. Use support guides when you need deeper context, implementation detail, or troubleshooting help.
Open Routing Number ValidatorHow to Read a US Check — Finding Routing and Account Numbers
A step-by-step guide to the MICR line on the bottom of a US check, including where to find the routing number, account number, and check number.
Common Routing Number Errors and How to Fix Them
The most frequent mistakes people make with ABA routing numbers — wrong length, transposed digits, wrong routing number type, and how each error affects your transfer.