How to Request Payment for Out-of-Scope Work

Requesting payment for extra scope gets harder the longer you wait. If you absorb out-of-scope work without comment, it sets a precedent that extra requests are free. The key is to be transparent, specific, and proportionate — and to address it before the project closes.

Original Message

I did way more work than we agreed on and I need to charge you for it now.

Professional Version

Hi [Client Name],

I wanted to flag an element of the recent work that falls outside our original scope agreement.

Over the course of the project, we completed [specific additional work] which wasn't included in the original deliverables. I'm happy to have done this to ensure the project's success, and I want to be transparent about the additional time involved: [X hours / specific work description].

I'll be adding a supplemental invoice for [amount] covering this additional work, aligning with the rate in our original agreement.

I hope this is straightforward. Please let me know if you have any questions.

Best regards,
[Your Name]

Polite Version

Hi [Client Name],

Hope you're happy with how things turned out! I wanted to quickly mention something before wrapping everything up.

There was some work that ended up going beyond the original scope — specifically [brief description]. I'll send a supplemental invoice for [amount]. Let me know if you have any questions.

Thanks,
[Your Name]

Firm Version

Dear [Client Name],

Please note that [specific work] was completed outside the original project scope. A supplemental invoice for [amount] will be issued for this additional work, reflecting [X hours] at the agreed rate of [rate].

Regards,
[Your Name]

When to Use This Template

  • When extra work was completed during a project beyond the agreed deliverables
  • When the client requested additions that weren't in the original brief
  • When you want to bill for additional scope without damaging the relationship
  • When the project has ended and you need to issue a supplemental invoice

Common Mistakes to Avoid

Raising it only after the project is fully delivered: Flagging additional scope at the very end, when the client thinks everything is settled, can feel like a last-minute surprise.
Being vague about what the additional work was: Be specific: what was done, how long it took, and why it falls outside the original scope.
Absorbing all out-of-scope work and then building resentment: Professional boundary-setting around scope is better for both parties in the long run.

Frequently Asked Questions

What if the client disputes that the work was out of scope?

Refer to the original brief, contract, or email trail that defined the scope.

Should I ask permission before doing extra work?

Ideally, yes. Flagging 'this is outside our original scope — would you like me to proceed as a change request?' avoids payment disputes entirely.