Example business: a small service company billing completed work. Sample amounts use one currency; invoice and tax requirements depend on the business location.
1. What the process covers
An invoice tells a customer what they are being charged for and when payment is due. A payment record shows money received. Matching the two explains what remains outstanding. A quotation or an unconfirmed bank message should not be treated as a settled invoice.
Agree when billing happens: before delivery, after accepted work, or at defined milestones. Use the agreed scope, customer details, prices, and relevant tax treatment. Finance should confirm the local document and accounting requirements.
2. People and records to keep
On small screens, scroll the table sideways to see every column.
| Record | Who uses it | What to keep |
|---|---|---|
| Customer invoice | Billing staff | Customer, invoice number, agreed items, amounts, currency, and due date. |
| Payment receipt | Finance | Date, amount, payment method, reference, and matched invoice. |
| Credit note | Authorized billing staff | Reason, amount, and link to the original invoice. |
| Follow-up record | Accounts staff | Reminder date, customer reply, dispute owner, and next action. |
3. The everyday workflow
- Confirm the billing basis. Check the accepted order, completed work, or agreed milestone.
- Prepare and check the invoice. Confirm the customer, amount, references, and due date before issuing it.
- Send it through the agreed channel. Keep enough detail for the customer to identify the charge.
- Match incoming payments. Connect bank or payment-provider records to the correct invoice, including part payments.
- Follow up the balance. Review disputes and credits before sending reminders. Record settlement when the payment is confirmed.
4. A small business example
A business issues an invoice for 1,000. The customer pays 400, and an approved correction creates a credit note for 100. The remaining balance is 1,000 − 400 − 100 = 500.
The reminder should ask about the remaining 500, not the original 1,000. If a further payment appears without a clear reference, finance investigates and matches it before changing the invoice to paid. The correction and payment history remain visible.
5. Checks and common problems
- Do not create another invoice just because the original was emailed twice or a customer asks for a copy.
- Keep currency clear when matching a payment. Different currencies and bank charges need the agreed finance treatment.
- Record disputed charges with an owner so automatic reminders do not ignore an active issue.
- A refund and a credit note are different actions: one moves money, while the other adjusts the billed amount.
- Avoid promising that every payment method settles immediately; check its actual confirmation and matching process.
6. Start with a simple system
Start with a customer invoice register and a due-date review. A simple system can show outstanding amounts, part payments, customer promises, and unresolved disputes. Limit who can change issued documents or approve credits.
Review overdue balances by age, payments waiting to be matched, and reminders that produced a useful response. Keep reminder wording clear and respectful, with a route for customers to explain a problem.
7. Frequently asked questions
Does sending an invoice mean the customer has paid?
No. Issuing the invoice and receiving payment are separate events. Match confirmed receipts to the invoice to establish the remaining balance.
How should part payments be handled?
Record each payment against the correct invoice and retain its reference. The remaining amount stays outstanding until covered by confirmed payments or approved credits.
Is a credit note the same as a refund?
No. A credit note adjusts a billed amount. A refund sends money back. Depending on the situation, a business may need one or both, with the correct approvals and accounting treatment.
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