Service Contracts and AMC Billing
Service Contracts (AMC) turn “invoice them every month” from a calendar reminder into a system guarantee. You define the arrangement once — who, what, how much, how often — and each period’s invoice is generated from it, either with a click or automatically.
Setting up a contract
- Go to Services → Service Contracts / AMC → + New Contract.
- Set the customer, the billing period — monthly, quarterly, half-yearly, or yearly — and the first bill’s due date.
- Add a line for what you are billing: a description, quantity, rate, and VAT rate. The free-text description is the recommended way to describe the charge.
- Activate the contract.
Billing each period
Services → Billing Due is your work-list: contracts due today or overdue appear there, and one click on Generate Invoice creates that period’s invoice and advances the schedule to the next period. The generated bill is a normal Sales invoice — it flows into VAT returns, receivables, and party statements like any other.
Auto-post — and why to opt in deliberately
If you would rather not click at all, switch a contract’s billing mode to Auto-post and a daily background job bills it when due. Opt in only once you trust the contract’s setup completely: a tax invoice is final the instant it posts. A mistake in an auto-posted bill is corrected with a credit note, not an edit — exactly like every other invoice in the system.
Practical notes
- Generated invoices are dated when they are created, so contracts assume your company’s books run on the current fiscal year. If your company is still onboarding — catching its books up to today’s date — finish reaching the live fiscal year before activating recurring billing.
- Renewal price changes are contract edits: update the line rate and the next generated bill follows it. Already-posted invoices are unaffected.
- Pair contracts with the TDS Receivable flow when clients withhold tax on each period’s payment.