Mortgage Calculator: Know Your Numbers Before You Apply
The most common mistake first-time buyers make is working backwards — finding a property they love, then discovering the monthly repayments are more than their budget allows. A mortgage simulation flips that sequence. Run the numbers first, understand what you can realistically afford, and walk into the application process with confidence rather than guesswork.
Data as of 12 May 2026
How to Use the IDEAL Mortgage Calculator
Enter the property price you have in mind, the down payment percentage you can put up, and the loan tenure you are considering. The calculator returns your estimated monthly repayment instantly. If you are unsure where to start, try the reverse approach: enter the monthly repayment you are comfortable with, and the calculator will show you the property price range within your reach. This tends to be more useful for buyers who are still in the early stages of planning.
The figures update in real time as you adjust any input, so you can run multiple scenarios in a few seconds — comparing a 15-year tenure against a 20-year tenure, for instance, or seeing how a larger down payment affects your monthly obligation.
What the Results Actually Mean?
Three numbers you need to pay attention to from the calculator results:
- Monthly repayment (cicilan KPR) is the fixed amount you pay the bank each month for the duration of the loan. A widely used rule of thumb is to keep total monthly debt repayments — including KPR — below 30 to 35 percent of your net monthly income. Banks in Indonesia typically apply a similar ceiling when assessing eligibility.
- Loan tenure is how long you take to repay the mortgage, commonly between 5 and 30 years. A longer tenure reduces your monthly repayment but increases the total interest paid over the life of the loan. A shorter tenure does the opposite. There is no universally correct answer — the right tenure depends on your income stability, financial goals, and what you plan to do with the cash flow difference.
- Interest rate (bunga KPR) shown in the simulation reflects the current fixed promotional rate, which most banks offer for the first one to five years. After that promotional period ends, the rate transitions to a floating rate that moves with Bank Indonesia's benchmark rate. Plan your budget for both phases — not just the lower introductory rate.
Ready to Apply?
Once you have a simulation you are comfortable with, the next step is seeing what banks will actually offer you — which is often different from the headline rate. Through IDEAL, you can submit a single application and receive real offers from up to three banks simultaneously, then compare them side by side before committing. No paperwork duplication, no branch visits, no guessing.
Why apply for a mortgage through IDEAL?
You can enjoy these benefits when applying for a mortgage through IDEAL, you know.
Freely choose mortgage tenor as needed
Various lowest interest rate options
Many bank options available! Not limited to just one choice
Smooth application process assisted until contract signing
Easily apply to up to 3 banks in one submission
Data security is guaranteed with ISO27001 certification
Check your credit profile instantly! No need to wait for days
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