Mortgage calculator
Progressive Interest Calculator Malaysia
Estimate the interest payable before full instalment starts on an under-construction property.
Tool workspace
Progressive Interest Calculator inputs
Adjust the inputs and use the result as a quick estimate before a proper case review.
Mortgage
Progressive Interest Calculator
Estimate interest during construction drawdown stages.
Enter an amount above RM0. Commas are added automatically; up to 2 decimal places.
Enter 0–100%; up to 2 decimal places.
Enter 0–25%; decimals are allowed, e.g. 3.8.
Progressive stages
The stages add up to the full loan drawdown.
Illustrative result
RM 25,650.00
4 stages covering 100% of the drawdown.
- Estimated progressive interest
- RM 25,650.00
- Estimated loan amount
- RM 540,000
- Allocated drawdown
- 100.00%
Stage-by-stage estimate
- Foundation (10%)
- RM 54,000 disbursed, RM 513.00 interest
- Structure (25%)
- RM 189,000 disbursed, RM 3,591.00 interest
- Walls / roofing (25%)
- RM 324,000 disbursed, RM 6,156.00 interest
- Completion (40%)
- RM 540,000 disbursed, RM 15,390.00 interest
How it works
Read the result with the formula and assumptions in mind.
Short answer
This calculator estimates progressive interest by applying the loan rate to the amount disbursed at each construction stage.
Formula
Calculation logic
Stage interest = running disbursed loan amount x annual interest rate / 12 x months in that stage.
Example
Worked scenario
Example: if the bank releases the loan in several stages, the calculator adds interest for each stage until completion.
Assumptions
Before using the number
- Drawdown timing is simplified into stage percentage and months.
- Actual developer billing and bank release timing may differ.
- The result excludes maintenance, sinking fund and other ownership costs.
Interpretation
How to use the result
- The result is most useful as a cash-flow range because actual billing dates can move.
- A longer period at a higher disbursed percentage increases progressive interest.
- Keep a buffer for billing timing and other ownership costs not included here.
Method and sources
What supports the illustration
Methodology last reviewed 19 July 2026.
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