Sometimes, you might need to enter a payment for an invoice manually. For payments made via cash, cheque, or other offline methods, use the Add manual payment feature:
Open an invoice.
Click Add manual payment.
Select the payment method: Cash, Bank Transfer, POS, or Cheque.
Enter the payment amount.
(Optional) Under Reference, enter the cheque reference number or another reference to the payment document.
Record the payment date.
Click Add.
If the payment is for the full amount of the invoice, the invoice status will automatically be changed to "Paid".