AP Payment Runs: Check Writing, ACH, and Early-Payment Discounts

AP Payment Runs: Check Writing, ACH, and Early-Payment Discounts

Why Payment Runs Matter

A payment run is the scheduled process by which a business pays its outstanding vendor bills in a single, organized batch. Running payments systematically—rather than one bill at a time—keeps cash flow predictable, reduces the chance of missed due dates, and lets you capture early-payment discounts that vendors offer as an incentive for fast payment. As a bookkeeper, you are responsible for executing this process accurately, documenting every transaction, and protecting the company's financial records.

Understanding 2/10 Net 30 Terms

Vendors often print payment terms directly on their invoices. One of the most common is 2/10 net 30, which means:

• The full invoice amount is due within 30 days of the invoice date.
• If the buyer pays within 10 days, the buyer may deduct 2% from the invoice total.

Example: A $1,500 invoice with 2/10 net 30 terms allows a $30 discount (2% × $1,500) if paid by day 10. Paying on day 11 means the full $1,500 is owed by day 30.

Capturing these discounts is genuinely valuable. A 2% savings for paying 20 days early translates to a significant annualized return on cash. Always check whether available cash on hand supports paying early before choosing the discount option.

Cash-Constraint Decision-Making

Before processing a payment run, the bookkeeper reviews a cash-availability figure—the maximum amount the company can pay out in this cycle without overdrawing its operating account. With that number in hand, prioritize bills in this order:

1. Past-due bills – Paying late damages vendor relationships and may trigger late fees or credit holds.

2. Bills within the discount window – Pay these next if cash allows; the savings offset the early outflow.

3. Bills due soon (within a few days) – Prevent them from becoming past due.

4. Bills with due dates further out – Hold until the next payment run if cash is tight.

Document your reasoning for every bill you choose to pay or hold. Written justification protects you and the company if questions arise later.

Methods of Payment

Check – QuickBooks can print checks directly if your printer is loaded with pre-printed check stock. Each check posts to the bank account and reduces the vendor's balance. The check register records the check number, date, payee, and amount.

ACH (Automated Clearing House) – An electronic transfer directly from your bank account to the vendor's bank account. In QuickBooks, you record ACH payments similarly to checks but select an ACH or e-check payment method. The transaction clears faster than a paper check, usually within one to two business days. Confirm with your bank that ACH origination is active on the account before scheduling transfers.

Processing a Payment Run in QuickBooks

1. Open Vendors → Pay Bills.

2. Set the Show bills due on or before date to capture all bills due within the current cycle.

3. Review the list. Bills past their discount date will not show a discount automatically—verify manually.

4. For bills within the discount window, click the bill line, then click Set Discount. Enter the discount amount (calculated as: invoice total × discount rate). QuickBooks posts the discount to a Purchase Discounts income account.

5. Select the bills you will pay given the cash constraint. The running total appears at the bottom of the screen.

6. Choose Payment Method: Check or ACH. For checks, choose To be printed if you want QuickBooks to generate the check, or enter a check number if writing by hand.

7. Confirm the Payment Account (the correct bank account).

8. Click Pay Selected Bills. QuickBooks posts each payment, clears the bill, and updates the vendor balance.

9. If printing checks, go to File → Print Forms → Checks and print on check stock.

Verifying Your Work

After the payment run, pull two reports:

• Check Register (Banking → Use Register, or Reports → Banking → Check Detail) – Confirms each payment posted with the correct date, amount, and payee.
• Vendor Balance Detail (Reports → Vendors & Payables → Vendor Balance Detail) – Confirms that every bill you paid shows a zero balance. Any remaining balance signals an error.

Reconcile the total payments on the check register against your manual discount worksheet. Discrepancies greater than $0.01 (beyond normal rounding) indicate a data-entry error that must be corrected before closing the period.

Data Integrity and Security

Payment runs involve real money. Follow these safeguards:

• Dual control: Where possible, have a second person review the payment batch before it is transmitted or checks are signed. Many businesses require a manager's approval for batches above a set dollar threshold.
• ACH security: Never transmit ACH files over an unsecured network. Use the company's secured, password-protected systems only.
• Check stock: Store blank check stock in a locked cabinet. Unauthorized access to check stock creates fraud risk.
• Audit trail: Never delete or void a payment without proper authorization and documentation. QuickBooks maintains an audit log; unusual deletions are visible to supervisors and auditors.
• Vendor file accuracy: Confirm vendor bank account numbers and mailing addresses before processing. Fraudsters sometimes attempt to redirect payments by posing as vendors requesting address or banking changes—always verify through a known phone number, not information provided in the suspicious request.

These controls are standard bookkeeping practice and protect both the company and you as the person processing payments.