Monthly instalment
The calculator converts the annual rate into a monthly rate and applies a reducing-balance loan formula. This is more useful than a rough principal divided by months estimate.
Total interest and total cost
A low monthly payment can still create high total interest if the term is long. The calculator therefore shows total interest and total cost, including a simple admin-fee estimate.
Extra payment simulation
If the borrower pays extra each month, the outstanding balance reduces faster. The calculator simulates that month by month to estimate a shorter payoff period.
Affordability check
The debt-to-income view combines the new estimated instalment with existing monthly debt and compares it with monthly income. It helps users notice if a loan may feel heavy before applying.
What lenders may still change
Actual bank offers can differ by salary transfer, employer category, credit profile, insurance, fees, promotional pricing and regulatory policy. The calculator is a decision-preparation tool, not an approval engine.
Common questions
Frequently asked questions
What formula does the calculator use?+
It uses a reducing-balance amortisation formula, which estimates a fixed monthly instalment from loan amount, term and annual rate.
Why include admin fee?+
Fees can affect the total cost of borrowing even when they do not change the headline monthly instalment.
What is the affordability view?+
It compares the estimated instalment plus existing monthly debt with monthly income. This is only a planning indicator, not a bank approval rule.
Can extra payments help?+
Yes. Extra monthly payments can reduce payoff time and interest in the calculator's simulation.
Official source and scope
Saudi Central Bank official portalRule period: User-entered calculation assumptions
Next scheduled review: 1 October 2027
The calculation explanation, assumptions and linked tool method were reviewed without claiming a statutory rate.
This guide explains general rules and does not replace personalised tax, financial, employment or legal advice. For exact filing, payroll, lending or compliance decisions, use the official source and professional guidance where needed.