Loans & Credit
Updated August 5, 2026
Borrowing decisions are some of the largest financial commitments you'll make. This hub organizes every PraxisCalc loan and mortgage calculator and guide in one place, from figuring out your monthly payment to understanding what you can actually afford.
Your Equated Monthly Installment (EMI) is the fixed payment on any amortizing loan. For a home purchase, the full picture also includes taxes, insurance, and PMI, together known as PITI.
Monthly payment for any loan type
Full payment with taxes & insurance
Year-by-year payment schedule
Home, car, and personal loans share the same amortization math but different typical terms, rates, and lender expectations.
EMI, down payment & interest
Auto payment & interest
Monthly EMI for unsecured loans
Before you borrow, it helps to know how much you can realistically afford and how existing debt affects your options.
How much house or car can you afford
Debt-to-income ratio for mortgage approval
Plan your debt-free date
Compare renting to buying
Start with the EMI or mortgage calculator to see your monthly number, then use the affordability and DTI tools to check whether that payment fits your budget before you apply.
Each guide answers one borrowing question directly, shows the formula, and works a real example through to the answer.
The amortisation formula behind every fixed-instalment loan, with a worked example and a down payment.
Principal, interest, taxes and insurance, and why the advertised payment is never the real one.
Home loan EMI, total interest over the term, and what a larger down payment actually saves.
Working out the payment on a financed car, and why long terms create negative equity.
Unsecured loan payments, and the difference between a flat rate and a reducing balance rate.
How each payment splits between interest and principal, and how to build a schedule row by row.
The 28/36 rule, what the cap really has to cover, and why approval is not the same as affordable.
Working backwards from a debt-to-income ceiling to the loan amount a payment can support.
The 20/4/10 rule and the running costs that never appear on a monthly statement.
Counting the costs a mortgage payment hides, and how long you need to stay for buying to pay off.
Debt-to-income ratio, what lenders count, and the limits that decide a mortgage application.
Month-by-month payoff maths, and why minimum payments barely touch the principal.
Which ordering clears debt cheapest, and when the behavioural argument beats the arithmetic.
The 30% rule, how utilisation differs from DTI, and how to lower it before the next statement.