Payment Terms

Payment Terms is your company's own list of payment terms — "30 days after invoice", "Cash on delivery", "End of month + 30 days" and so on. Every sales and purchase document picks its term from this list, and the term works out the document's due date. You reach it at Treasury → Settings → Payment Terms.

Who can use this page

Opening Payment Terms and adding, editing, switching a term off or choosing a default all need Company settings access. Every user still sees the active terms in the Payment terms dropdowns of the documents they work on.

The Payment Terms List

Each row is one term:

Column	What it shows
Code	The term's short code (up to 5 characters). This is what multibook receives.
Name	The name shown in the documents' Payment terms dropdown. A switched-off term shows an Inactive tag.
Due date	The rule in words, e.g. 30 days after invoice, On invoice date (0 days after invoice), On delivery, No due date.
Used for	Sales and purchases, Sales (customers) only, or Purchases (suppliers) only.
Default (sales)	Tick = the term new sales documents start on when the customer has no term of its own.
Default (purchases)	Tick = the term new purchase documents start on when the supplier has no term of its own.
Active	Switch a term off to remove it from the dropdowns. Documents that already use it keep it.

Tip

A term is never deleted — documents point at its code — so retire one by switching it off. The default term must stay active: pick another default first, then switch the old one off. A term must be active before it can become the default.

Adding or Editing a Payment Term

Open the dialog
Click Add payment term, or the pencil on a row to edit it.
Fill in the term
Code*text
Up to 5 letters or numbers, stored in capitals. It must be unique in your company, and it can't be changed after the term is added — documents point at it. multibook receives this code.
Name*text
What users see in the Payment terms dropdown (up to 100 characters).
Due date rule*select
How the due date is worked out — see the table below. Default: Days after invoice date.
Daysnumber
0 to 365. Used only by Days after invoice date, Days after delivery date and End of month, plus days; greyed out for the other rules. Default: 30.
Used for*select
Sales and purchases (default), Sales (customers) or Purchases (suppliers) — which documents list the term.
Default on sales documentscheckbox
Shown unless the term is purchases-only. Makes this the company's default for new sales documents.
Default on purchase documentscheckbox
Shown unless the term is sales-only. Makes this the company's default for new purchase documents.
Save
Click Add (or Save). A message confirms …added or …saved. A code already in use is refused with Code … is already used.

Due Date Rules

On a document, the due date follows its payment term. For a document dated Oct 15, 2026 that is delivered on Oct 20, 2026:

The due date each rule gives

Due date rule	Days	Due date
Days after invoice date	30	Nov 14, 2026
Days after invoice date	0	Oct 15, 2026 (shown as "On invoice date")
Days after delivery date	30	Nov 19, 2026 — none until the delivery date is known
End of month, plus days	30	Nov 30, 2026 (Oct 31 + 30 days)
On delivery	—	Oct 20, 2026 — none until the delivery date is known
In advance (before delivery)	—	No date — typed on the document
No due date	—	No date — typed on the document

The first row is the dialog's default rule and days.

When the term gives a date, the document's due date follows it. Changing it by hand asks for a reason, which is kept on the document. When the term gives no date, the due date is left free to type.

Changing a Due Date on an Invoice

On the Invoice form the Due date is filled in from the payment term and locked, with the note From the payment term (…). It follows the term as you change the issue date or the term.

Click Change beside the Due date
The Change the due date dialog opens and states the date the term gives.
Enter the new date and the reason
Due date*date
The date the invoice is actually due.
Reason*text
Why this invoice is due on a different date — at least 3 characters (kept up to 500). Not asked when you pick the date the term already gives.
Click Change due date
The form then shows Changed by … from …: reason. Use … puts the term's date back and drops the reason.

If you pick a different Payment terms on the Invoice than the Sales Order carried, the form shows Changed from the Sales Order's "…" and asks for a Reason for changing the payment terms (required, up to 300 characters).

Requiring Payment Terms on Quotations and Sales Orders

In Document Types → Quotation / Sales Order → Rules the rule Require payment terms decides whether the quotation or order must carry a term. When it is off, the Payment terms dropdown starts on Not set yet (the customer's own term, if it has one, still fills it in), and the term is set on the Invoice, which always requires one.

Which Term a New Document Starts On

A new document starts on the customer's or supplier's own payment term when one is set on their record; otherwise on the company default for that side (the ticked Default (sales) or Default (purchases) term). The dropdown lists only active terms for that side.

How It Connects

Feeds into

Clients — a client can carry its own payment term, which its sales documents start on.
Suppliers — a supplier can carry its own payment term, which its purchase documents start on.
Sales Order — quotations and sales orders pick their payment term — and so their due date — from this list.
Sales Invoice — the invoice’s payment term sets its due date.
Purchase Order — purchase orders pick their payment term from the purchase-side terms.

Payment Terms#

The Payment Terms List#

Adding or Editing a Payment Term#

Due Date Rules#

Changing a Due Date on an Invoice#

Requiring Payment Terms on Quotations and Sales Orders#

Which Term a New Document Starts On#

How It Connects#