What is a duplicate payment?

Definition

A duplicate payment is a second cash out for the same vendor bill. In the books, that extra payment usually hits accounts payable after the balance is already zero, so cash falls a second time and the payable can sit as a debit until the money is recovered.

Where it shows up

Balance Sheet: Related to cash down twice, and a payable that may now sit as a debit until recovered.

P&L: Related to nothing extra unless the recovery is later written off.

Cash flow: Related to cash leaving a second time.

See also: Three-Way Match · Accounts Payable · Internal Controls

When you look at the Balance Sheet, cash is lower than the amount you meant to pay. The payable that should have been at zero may now show a debit, which is the vendor holding your extra cash.

The P&L does not move when you book the second payment against the payable. Expense only changes if you later give up on collecting the overpayment and write it off.

On the Statement of Cash Flows, the extra payment is another operating cash out. That second out is what this term is about.

A debit sitting in accounts payable is easy to miss if you only scan the total. Open the vendor's ledger and look for a bill that was paid twice, or for a payable balance that flipped from credit to debit.

How it works

A vendor bill is recorded and paid once. A second copy then gets paid because the invoice number was typed differently, two people approved the same file, or a credit never got applied.

The extra cash leaves the bank. If the payable was already cleared, the second debit leaves a debit balance in accounts payable, which is an overpayment sitting on the books, not a new purchase.

Someone has to catch it. A bank reconciliation will not always flag it, because both payments may have been recorded and both may appear on the bank statement.

When the books and the bank agree, the clue is on the payable side. A vendor statement reconciliation will not match if they show one open bill and you show a debit.

A check run is a common place this happens. Two lines for the same bill can both look approved if no one ran a three-way match against the original purchase order and goods receipt.

After the fact, a remittance advice that lists the same invoice twice is a clue. On the vendor's side, cash application may park the extra as an unapplied payment until they refund it or apply it to a later bill.

Until recovery, cash stays down. Recovery is a refund check, an ACH back in, or a credit that you apply against a future bill.

When the refund arrives, you debit cash and credit accounts payable, which clears the debit. If the vendor applies the extra to a later bill, that later bill's credit in accounts payable is offset by the debit the duplicate left behind.

Example

A neighborhood cafe buys bread from a bakery. The $1,200 bill is paid on Friday, and a second copy of the same bill is paid again on Monday.

The extra payment, not the original bill, is recorded as:

Debit: Accounts payable $1,200

Credit: Cash $1,200

Cash is down another $1,200. The payable that was already at zero now sits as a $1,200 debit until the bakery sends the money back or applies it to next week's order.

Common mix-ups

A duplicate payment is not two bills for two deliveries. Two real deliveries are two real payments; a duplicate is the same bill paid twice.

A duplicate payment is not a prepayment. A prepayment is cash sent on purpose before the goods arrive, while a duplicate is cash sent after you already paid.

A duplicate payment is not the same as an outstanding check. An outstanding check is a payment you recorded that the bank has not yet cleared, while a duplicate is a second payment that did leave, or will leave, cash.

Related terms

• Three-Way Match: Checking the purchase order, receipt, and vendor bill against each other before paying.
• Vendor Statement Reconciliation: Comparing a supplier's statement of your account to your own payable records.
• Accounts Payable: Amounts the business owes vendors for goods or services already received.
• Internal Controls: The procedures that keep the books accurate and assets protected.
• Vendor Bill: The invoice a supplier sends that becomes a payable.
• Check Run: The scheduled batch in which approved vendor bills are paid.
• Audit Trail: The traceable chain from a reported number back to its source document.
• Segregation Of Duties: Splitting recording, approving, and payment tasks so no one person controls a transaction end to end.