Mortgage: how to calculate it so as not to go bankrupt

A mortgage for many Russians remains the only real way to buy their own home. But between the phrases “bank approved” and “mortgage paid off” lie decades of financial obligations, mistakes and overestimated opportunities.

Incorrect mortgage calculation can turn buying an apartment into a chronic source of stress and debt. Let's figure out how to calculate your mortgage in advance and not drive yourself into a financial trap .

Why does the bank approve more than safe

The first thing that is important to understand: the bank and the borrower look at the mortgage from different angles, reminds xrust. The bank evaluates whether you can formally pay the loan, and not live comfortably.

Typically, banks are ready to approve a mortgage if the monthly payment is up to 40–50% of official income. In practice, this means living “from paycheck to paycheck,” without savings or a safety net. A financially savvy approach is no more than 25–30% of the family’s stable monthly income .

Example:
If the family income is 120,000 rubles, a safe mortgage payment is about 30,000–36,000 rubles. Anything higher sharply increases the risk of delays during any instability.

The real cost of a mortgage, not the figure from advertising

class=»notranslate»>__GTAG10__ In the advertisement you see the interest rate. In life — pay for:

• principal debt;
• interest to the bank;
• life and property insurance;
• real estate assessment;
• notary and registration costs;
• possible commissions.

A mortgage at 13% per annum for 25 years easily turns into an overpayment of 2–2.5 times the cost of the apartment . Therefore, it is important to consider the full cost of the loan , and not just the monthly payment.

Tip: always look at the entire payment schedule and the total payment amount for the entire term.

Annuity or differentiated payment: which is safer

In the Russian Federation, they most often offer an annuity — equal monthly payments. It is convenient psychologically, but less profitable: in the first years you almost do not pay off the principal debt, paying mostly interest.

Differentiated payment:

• is more expensive at the beginning;
• is cheaper in the long run;
• reduces debt faster.

If income allows you to withstand the increased load in the first years, a differentiated scheme reduces the overall risk and overpayment . If not, an annuity is acceptable, but with the calculation of early repayments.

Mortgage term: longer does not mean safer

A common mistake is to take out a mortgage for the maximum number of years in order to reduce the payment. Yes, the payment is less, but:

• the overpayment is growing sharply;
• you depend on the bank longer;
• higher risk of life changes (illness, dismissal, divorce).

The optimal term is 15–20 years , even if the bank offers 30. If your income increases, you will be able to pay off faster, and if it falls, the term will no longer be excessive.

Financial cushion is a prerequisite

A mortgage without reserves is a direct path to delays. Before signing the contract, you must have:

• minimum 6 months of mandatory expenses in accumulations;
• separate reserve for repairs and furniture;
• reserve for an increase in utility bills and taxes.

If after the first payment you have “zero” in your account, the mortgage was taken out too early.

How to correctly calculate a mortgage yourself

Before going to the bank, answer yourself 5 questions:

1. What payment will I be able to pay even if my income drops by 20% ?
2. How much am I really willing to overpay for an apartment?
3. Do I have any savings after the transaction?
4. Will I be able to make early payments at least once a year?
5. What will happen to the mortgage if one source of income disappears?

Use mortgage calculators, but always add +10-15% to the payment load — for inflation, tariffs and unforeseen expenses.

When a mortgage is a mistake

A mortgage can be dangerous if:

• income is unstable or “gray”;
• no savings;
• the payment exceeds a third of income;
• floating rate or with temporary benefits;
• the calculation is based on future, not current income.

Financial literacy is not a refusal of a mortgage, but the ability to take it at a time when it does not ruin your life .

Summary

A mortgage is not just a loan, but a long-term financial obligation that affects all areas of life. Proper calculation allows you to turn it into a tool, not a problem. The main rule is simple: if the mortgage deprives you of sleep and security — you took too much .

Xrust Mortgage: how to calculate it so as not to go bankrupt