Payment Plan Agreement After Letter of Demand: How to Structure It Properly

Your letter of demand worked. The debtor responded saying they want to pay, but they need time. They are asking to pay in instalments.

This is the critical moment. Accept instalments without a proper agreement and you risk getting one or two payments, then nothing.

Why You Need a Written Payment Plan Agreement

A verbal agreement to pay in instalments leaves you exposed:

• No clear record of what was agreed
• No written proof of the payment schedule
• No agreed terms for what happens if they miss a payment
• Difficulty resuming legal action if needed

A written payment plan agreement creates a binding contract. It confirms the debt amount, sets out the instalments, specifies what happens on default, and preserves your rights if they stop paying.

What Must Be in a Payment Plan Agreement

A legally effective payment plan agreement in Australia typically includes:

Total debt amount — the full sum owed, broken down if necessary (principal, interest, costs)

Instalment schedule — specific amounts and specific dates (not “monthly” or “when I can”)

Payment method — bank transfer, direct debit, cheque

Default clause — what happens if a payment is missed (usually the full balance becomes immediately due)

Interest provisions — whether interest continues to accrue on the outstanding balance

Acknowledgment of debt — the debtor confirms they owe the amount and waive any dispute

Costs clause — who pays legal costs if enforcement is needed

Governing law — which Australian state’s law applies

Signatures and date — both parties must sign

Structuring the Instalment Schedule

The instalment schedule is the heart of the agreement. It must be realistic but firm.

Set fixed dates, not vague terms. “First payment due 15 January 2025” is enforceable. “Monthly payments starting soon” is not.

Match their actual capacity. If they genuinely cannot pay $500 per week, do not agree to it. A failed payment plan wastes everyone’s time. For substantial debts, ask for evidence of income or financial position.

Front-load if possible. A larger first payment (say 30% of the debt) shows good faith and reduces your risk. If they default after paying 30%, you have less to chase.

Keep the term reasonable. A $5,000 debt paid over 24 months means waiting two years to be paid in full. Consider whether that is commercially acceptable.

Specify the day of the month. Align payment dates with their pay cycle if known (every second Friday, or the 1st and 15th of each month).

The Default Clause: Your Safety Net

The default clause protects you when they miss a payment. A standard default clause typically provides:

• If any instalment is not paid within 7 days of the due date, the entire outstanding balance becomes immediately due and payable
• You may immediately commence legal proceedings to recover the full amount
• The debtor agrees to pay your legal costs of enforcement

This prevents the debtor from dragging out payments indefinitely. One missed payment triggers your right to demand the lot and take action.

Some agreements include a grace period (14 days after the due date), but this is optional. The stricter the default clause, the more incentive they have to keep paying.

Interest on Outstanding Balance

Decide whether interest continues to accrue on the unpaid balance during the payment plan term.

If the original debt included interest (under a contract or invoice terms), you can typically continue charging it. Specify the rate clearly: “Interest accrues at 10% per annum on the outstanding balance, calculated daily.”

If the debt did not originally include interest, you generally cannot add it unless the debtor agrees in writing. The payment plan agreement is your opportunity to get that agreement.

Many creditors waive interest during a payment plan as an incentive for compliance. This can be commercially sensible for smaller debts where you just want the principal paid.

Acknowledgment of Debt and Waiver of Dispute

Include a clause where the debtor formally acknowledges the debt and waives any right to dispute it.

Example wording:

“The Debtor acknowledges that they owe the Creditor the sum of $[amount] and agrees that this amount is due and payable. The Debtor waives any right to dispute the debt or raise any set-off or counterclaim.”

This prevents the debtor from later claiming they did not owe the money or trying to reduce the amount based on some alleged issue with your goods or services.

If there is a genuine dispute about part of the debt, resolve it before signing the payment plan.

What Happens If They Default

When the debtor misses a payment, you have three main options:

Demand immediate payment of the full balance. Send a notice invoking the default clause and demanding the outstanding amount within 7 days.

Negotiate a revised payment plan. If they have paid most of the debt and have a genuine reason for missing one payment, you might agree to a short extension. Get this in writing as a variation to the original agreement.

Commence legal proceedings. If they are clearly not going to pay, file in the relevant tribunal or court. The signed payment plan agreement is strong evidence of the debt and their acknowledgment of it.

The payment plan agreement does not prevent you from taking legal action. It defers it while they comply. Once they default, all your rights resume.

Tribunal or Court Action After a Payment Plan

If you need to take the debtor to QCAT, VCAT, the Local Court in New South Wales, or the equivalent tribunal or court in your state after they default, the signed agreement is powerful evidence.

You can prove:

• The debtor acknowledged owing the full amount
• They agreed to pay by instalments
• They defaulted on the agreement
• The full balance is now due

Tribunals generally accept payment plan agreements as binding contracts. The debtor cannot argue they did not owe the money when they signed an agreement confirming it.

How Claim Done Prepares Your Payment Plan Agreement

Claim Done generates a legally sound payment plan agreement tailored to your situation in about 5 minutes.

You provide:

• The total debt amount and what it relates to
• The proposed instalment schedule (amounts and dates)
• Any other specific terms you want included

Claim Done drafts a payment plan agreement covering the instalment schedule, default provisions and governing law.

The agreement is delivered as a ready-to-sign document. Once both parties sign it, you have a written record of the agreed terms.

Flat fee. No subscription. Prepared in about 5 minutes.

Final Checklist Before You Sign

Before you or the debtor signs the payment plan agreement:

• Confirm the total debt amount is correct
• Check every instalment date and amount
• Ensure the default clause is clear
• Verify both parties’ names and addresses are accurate
• Confirm the payment method is specified
• Make sure both parties will sign and date it

Once signed, keep the original in a safe place. Send a copy to the debtor. Set reminders for each payment due date so you can follow up immediately if they miss one.

Get Your Payment Plan Agreement Prepared Now

If a debtor has agreed to pay in instalments after receiving your letter of demand, do not rely on a handshake or an email.

Claim Done prepares your payment plan agreement in about 5 minutes for a flat fee. No subscription. No hidden costs. Australia-wide.

Tell us the debt amount, the instalment schedule, and any other terms. Our Programmatic Algorithms draft a comprehensive agreement ready for both parties to sign.

Get your payment plan agreement prepared now.

Frequently Asked Questions

Can I charge interest on a payment plan after a letter of demand?

Yes, if the original debt included interest or if the debtor agrees to it in writing. The payment plan agreement is your opportunity to include an interest clause. Many creditors waive interest as an incentive for compliance, but you can continue charging it if commercially appropriate.

What happens if the debtor misses one instalment?

If your payment plan agreement includes a default clause, missing one instalment typically makes the entire outstanding balance immediately due. You can then demand full payment and commence legal proceedings if necessary. The default clause is what protects you from endless delays.

Does a payment plan agreement stop me from taking legal action?

No. A payment plan defers legal action while the debtor complies with the instalments. If they default, you can immediately resume your right to take them to tribunal or court. The signed agreement actually strengthens your case because it proves they acknowledged the debt.

How long should a payment plan last?

It depends on the debt size and the debtor’s capacity to pay. A $2,000 debt might be paid over 3-6 months. A $20,000 debt might take 12-24 months. Keep the term realistic but commercially acceptable. Waiting years to be paid in full is rarely worth it unless the alternative is getting nothing.

Can I change the payment plan after it is signed?

Only if both parties agree in writing. If the debtor asks to vary the payment schedule, you can agree to a new arrangement, but get it documented as a variation to the original agreement. Put any change in writing, signed by both of you, so there is no argument later about what was agreed.