---
title: "Record the interest on an unpaid progress payment"
url: "https://ailawframework.com/practice/construction-and-infrastructure/record-the-interest-on-an-unpaid-progress-payment"
type: "task"
site: "AI Law Framework"
id: "A11-JU20261022-10"
practice_area: "Construction & Infrastructure"
tier: "yellow"
lawyer_review: "required"
last_reviewed: "2026-10-22"
---

# Record the interest on an unpaid progress payment

> From the contract and the date the progress payment became due, set out the unpaid amount and the interest rate stated in the contract. Leave a blank for the rate prescribed under the Civil Procedure Act.…

Canonical page: https://ailawframework.com/practice/construction-and-infrastructure/record-the-interest-on-an-unpaid-progress-payment  
Last reviewed: 2026-10-22

Site index for agents: https://ailawframework.com/llms.txt

## Key facts

| Fact | Value |
| --- | --- |
| Practice area | [Construction & Infrastructure](https://ailawframework.com/practice/construction-and-infrastructure.md) |
| Human involvement | Yellow: Lawyer and AI draft together |
| How AI is used | From the contract and the date the progress payment became due, set out the unpaid amount and the interest rate stated in the contract. Leave a blank for the rate prescribed under the Civil Procedure Act. Do not choose the greater rate. |
| What the lawyer must review | The lawyer confirms the payment is due, obtains the prescribed rate, and adopts the greater of that rate and the contract rate. |
| Written for / versions | 1 jurisdiction versions below |

## Checking plan

**Source-by-source verification**

Record both rates and use the greater one. Do not invent the prescribed rate.

- What the AI does: From the contract and the date the progress payment became due, set out the unpaid amount and the interest rate stated in the contract. Leave a blank for the rate prescribed under the Civil Procedure Act. Do not choose the greater rate.
- What the lawyer does: The lawyer confirms the payment is due, obtains the prescribed rate, and adopts the greater of that rate and the contract rate.
- Who reviews: Responsible lawyer with competence in the matter
- Basis: Practical workflow informed by the linked primary sources; the traffic light and working checks are editorial guidance, not a court classification.
- Why: The level reflects what the work is, the consequence of an error, and how much of the output the lawyer must independently re-derive.

## Checks the lawyer makes

1. Interest is payable on the unpaid amount of a progress payment that has become due and payable.
2. The rate is the greater of the rate prescribed under section 101 of the Civil Procedure Act 2005 and the rate specified in the construction contract.
3. Do not state a percentage for the prescribed rate. It was not set out in the section that was opened.
4. The lawyer confirms both rates before the interest figure is used.

## Notes

- These are suggested working checks. Confirm the required checking with the responsible lawyer before work starts; the checking approach does not establish permission to use AI.

## Sources

- [Building and Construction Industry Security of Payment Act 1999 (NSW) s 11](https://classic.austlii.edu.au/au/legis/nsw/consol_act/bacisopa1999606/s11.html) (checked 2026-10-22)

## Jurisdiction versions

| Jurisdiction | Level |
| --- | --- |
| [United States](https://ailawframework.com/practice/construction-and-infrastructure/record-the-interest-on-an-unpaid-progress-payment/united-states.md) | Yellow |

*Practice guidance for planning and review. Confirm current primary sources and the requirements of the actual matter. This is general information, not legal advice.*