Inflation erodes the real value of money. The 50/30/20 budget rule splits take-home pay into needs, wants, and savings. The time value of money shows what a future sum is worth today, the DTI ratio measures debt burden, and an emergency fund of 3–6 months of expenses shields you from unexpected costs. Pick a calculator below.
Calculate the total cost of your wedding based on guest count, catering, venue, photographer, and music. See cost per person and recommended budget reserve. Free wedding budget calculator.
Calculate the tip amount and total bill for a restaurant visit. Choose 5%, 10%, 15% or 20% and split the bill among guests.
Plan your household budget with the 50/30/20 method: needs, wants, savings. Free personal finance calculator.
Split a restaurant bill among multiple people with an optional tip. Calculate how much each person pays. Free bill splitter.
Calculate how much to save monthly to reach your financial goal, or how long it will take. Free savings plan calculator.
Calculate how much you need in your emergency fund and how long it will take to build it. 3, 6 or 9 months of expenses. Free online financial safety net calculator 2026.
Calculate your total monthly living costs: housing, food, transport, entertainment, health and other expenses. Plan your household budget and compare cities.
Calculate your monthly household budget balance: income vs expenses by category. Find out your monthly surplus or deficit and savings rate. Free online calculator.
Plan your annual household budget: income, fixed and variable expenses, savings. Check your yearly balance and financial reserve.
Calculate net income after deducting all costs: fixed, variable, and income tax. Simple financial analysis for freelancers and businesses.
Calculate the total cost of all your monthly and annual subscriptions: streaming, software, gym, press. Find out how much you really spend.
Estimate the monthly cost of living for a family in Poland. Accounts for the number of people, city (Warsaw, Kraków, Wrocław, Gdańsk) and lifestyle standard.
Calculate your total Christmas spending: gifts, food, decorations, entertainment and travel. Plan your holiday budget with no surprises.
Calculate monthly and annual food expenses for your household. Enter the number of adults, children, city size and diet type.
Calculate your net worth: assets minus liabilities. Cash, real estate, investments and debts in one place. Free net worth calculator.
Calculate the future value (FV) or present value (PV) of money with compound interest. Free online financial calculator.
Calculate total return and CAGR for any investment. Enter initial value, final value and number of years — instant result, free, no signup.
Calculate your monthly net passive income from rental property, dividend stocks and savings interest after Polish taxes. Free online calculator, no sign-up required.
Calculate the present value (PV) and future value (FV) of an annuity. Supports ordinary annuity and annuity due with any interest rate and number of periods.
Calculate the future value (FV) of a lump sum and regular monthly contributions. Enter principal, annual rate, years and contribution — instant result.
Calculate CAGR (compound annual growth rate), total return and growth multiple. Enter starting value, ending value and number of years — instant result.
Calculate how much your money will really be worth in X years at a given inflation rate. Enter amount, inflation rate and years — instant result.
Calculate statutory interest, late payment interest, or tax interest in Poland for any amount and delay period. Current 2025 rates included.
Calculate your DTI (debt-to-income) ratio. Check if your monthly obligations meet bank standards. Free credit capacity calculator.
Calculate how many years and months until your retirement and estimate your projected savings. Simple online retirement calculator.
Calculate how many months it will take to pay off your debt and how much interest you will pay. Snowball and avalanche methods. Free debt payoff calculator.
Calculate your monthly installment payment. Check the total repayment amount and interest cost for any annual interest rate. Free online installment calculator.
Calculate gross margin, net profit, and break-even point for any product or service. Check whether your product is profitable and what your margin is.
Inflation is the sustained rise in the general price level, gradually reducing the purchasing power of money. At 5% annual inflation, PLN 10,000 loses more than 38% of its real value over 10 years. Tracking the CPI (Consumer Price Index) helps you judge whether a savings deposit rate actually outpaces inflation. The 50/30/20 budget rule is a straightforward framework for managing household finances. It allocates 50% of net income to fixed needs (rent, utilities, groceries), 30% to discretionary spending (entertainment, dining out), and 20% to saving or debt repayment. Consistently following this split makes it easier to avoid lifestyle inflation and build wealth steadily. The time value of money is a core principle in finance: a zloty available today is worth more than the same zloty in the future because it can be invested and earn a return. Present-value and future-value calculators help assess investment profitability and compare loan or mortgage offers on an equal footing. The DTI (Debt-to-Income) ratio expresses monthly debt obligations as a percentage of gross monthly income. Polish banks typically require a DTI below 40–50% when assessing creditworthiness. A high DTI limits borrowing capacity and increases financial risk for a household. An emergency fund is a liquid cash reserve covering 3–6 months of essential living expenses. It should be kept in a savings account or short-term deposit with instant access, providing a buffer against sudden job loss, unexpected repairs, or unplanned medical costs. Our personal finance calculators help you evaluate each of these areas and make informed financial decisions.
If a deposit yields less than inflation, the real value falls despite nominal growth.
The quantity of goods and services you can buy with a given amount. Inflation reduces it.
Real value = nominal / (1 + inflation)^years. The inflation calculator does it for you.
Consumer Price Index — a basket of goods and services reflecting consumer inflation (GUS in Poland).
Yes — an investment yielding more than inflation protects real value. Inflation-linked bonds are one option.
Through interest rates — higher rates constrain credit and consumption, cooling price growth.
Real rate ≈ nominal − inflation. It shows the actual increase in purchasing power.
No — the result is gross. Interest income from deposits is subject to a 19% Belka tax.
Inflation = rising prices; deflation = falling prices. Deflation is also dangerous — it delays spending and investment.
Regularly review your budget, index your expenses and look for investments with real returns > inflation.