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The Interim and Final Invoice.
What is an interim invoice? How do you proceed? What should you consider? This article provides a concise overview of interim and final invoicing for a project.
(English image not yet available) What is an interim invoice?
An interim invoice is issued for a percentage or relative portion before the project's final completion.
Common practice:
30–50% of the proposal amount is invoiced after the project starts or upon reaching a first milestone. The corresponding final invoice follows upon project completion.
Common practice:
30–50% of the proposal amount is invoiced after the project starts or upon reaching a first milestone. The corresponding final invoice follows upon project completion.
When does an interim invoice make sense?
Typically, projects are invoiced after completion – once the service is delivered. However, larger projects tie up many resources over a longer period. This raises the question of how to ensure cash flow during this "dry spell" to pay all employees their salaries on time. Therefore, for larger projects, agreeing on one or more interim payments makes sense. It can also benefit the client, as they won't have to settle a large sum at the project's end.
How do you proceed?
Consider this during the proposal phase. If the proposal amount is relatively high, you can agree on an interim payment with the client. Often, the proposal states, for example, "50% of the proposal amount is due at the project's start." After the client confirms the proposal, a corresponding interim invoice is created.
What should you consider with an interim invoice?
- An interim invoice is essentially a regular invoice and must include all standard details.
- Additionally, it should be labeled as an "interim invoice" (or a related clear term - e.g., "advance invoice"). If there are multiple interim invoices, they should ideally be numbered for easy tracking.
- Every interim invoicing process must include a final invoice.
The Final Invoice
- A final invoice should be titled "Final Invoice" (or End Invoice). This makes it clear that one or more interim invoices are associated with it.
- The deduction of interim invoices is done by specifying the invoice number, invoice date, and VAT amount.
- Interim invoices are either a) deducted before the final invoice total net and by specifying the invoice number, invoice date, and VAT amount or b) gross afterwards.
How it works in MOCO
Invoice projects more conveniently: Interim and Final Invoice.
Special case of temporary VAT reduction in Germany
If an interim invoice was issued with a different tax rate than the final invoice, this difference must be corrected. MOCO calculates the tax correction and displays it on the final invoice.
Further Links
Confirm Proposal – Place Order. That's the difference.
Special case of temporary VAT reduction in Germany
If an interim invoice was issued with a different tax rate than the final invoice, this difference must be corrected. MOCO calculates the tax correction and displays it on the final invoice.
Further Links
Confirm Proposal – Place Order. That's the difference.







