Due dates and payment schedules

In short

Without a schedule, an invoice uses one due date. With a schedule, each installment has a date and amount; dates must strictly increase and amounts must exactly total the invoice. Payments and credits cover installments in order. Once one installment is fully covered, Billabex advances the effective due date to the next remaining installment.

Expected result

The schedule totals the invoice and currently due balance matches uncovered installments due by today.

Before you start

• Prepare dates and amounts agreed with the customer.
• Check invoice gross total and payments already recorded.

Procedure

1. Open the invoice and review its current due date or schedule.
2. For each installment, verify a date after issue and a strictly positive amount.
3. Ensure dates are unique and strictly increasing.
4. Add amounts, including final rounding, to exactly match total.
5. After payment, check the covered installment and new effective due date.

What Billabex does

Billabex applies payments and credits to nearest installments first. Forecast keeps every remaining installment on its own date instead of placing the whole balance on the first one.

If the result is not what you expected

• An invalid schedule is rejected or marked invalid rather than partly saved.
• A date before issue or duplicate dates are not accepted.
• For rounding differences, adjust the final installment without changing invoice total.