Mortgage (KPR) Calculator

The principal is the property price minus the down payment. From there the annuity formula applies: instalment = P × i × (1+i)^n / ((1+i)^n − 1), where i is the annual rate ÷ 12 ÷ 100 and n is the tenor in months. Example: an Rp800 million home with 20% down gives a Rp640 million principal. At 9% over 15 years that's roughly Rp6.5 million a month. Enter your own figures above for a result that fits your case.

It depends on bank policy, the property type, and whether it's your first home — typically in the 10-30% range, and Bank Indonesia has relaxed the rules in certain periods. What's mathematically certain: a larger down payment means a smaller principal, a lighter instalment, and less total interest. For the exact figure, ask the bank directly, as the rules change.

Banks generally work to a ceiling of roughly 30-40% of monthly income, often called RPC or DSR. Note it applies to all your obligations combined — existing vehicle finance or credit cards eat into the mortgage allowance. This calculator shows the instalment as a share of income if you fill in the income field, but the final call rests with the bank's credit analysis.

It depends which you need more: cash-flow safety or total savings. A long tenor keeps the instalment light and default risk lower, but total interest balloons. A short tenor saves substantial interest yet the instalment is heavy and can choke you if income falters. Many people take the middle path: a long tenor for safety, with partial early repayments when cash allows — but check whether your bank charges an early-settlement penalty first.

Very much so, and it's what surprises first-time buyers most. Once the fixed period ends, mortgages typically move to a floating rate tracking the benchmark. If market rates rise, your instalment rises without you doing anything. So don't judge affordability on the fixed-period instalment alone — simulate a few percentage points higher and check you'd still cope.