NGO Consultant Payment Demand Letter

Address the letter directly to the country director or the program manager who signed your original consultancy contract, while copying the head of the finance department. If the NGO is funded by a major international donor, copying the specific grant officer can also expedite the internal review process. This ensures the letter bypasses administrative gatekeepers and reaches decision-makers who have the authority to release funds.

You can legally charge interest on late payments only if a specific late fee or interest clause was included in your signed consultancy agreement. If your contract lacks this clause, demanding interest can weaken your position and prolong negotiations. Focus instead on securing the principal amount owed and add late payment terms to all your future contracts.

You should send a formal demand letter exactly 15 to 30 days after the invoice due date has passed, provided you have already sent at least two polite email reminders. Waiting longer than 30 days signals that you are willing to tolerate delayed payments, which can deprioritize your invoice in the NGO's cash flow queue. Prompt action helps maintain professional boundaries and ensures your services are paid before grant budgets close.

Politely remind them that your contract is with the NGO itself, not their donor, and that payment for completed milestones is not legally contingent on their external funding cycles unless explicitly stated in your contract. Request a partial payment schedule or a written, binding commitment of the exact date your invoice will be settled. This maintains pressure while offering a collaborative path forward to resolve their temporary liquidity issues.