Finance and Economics Calculators
Loan Calculator: Amortized and Declining-Balance Payments
Monthly payment, total interest and repayment schedule for amortized and declining-balance loans.
Budget Calculator: The 50/30/20 Rule
Split income by the 50/30/20 rule and find what is left after a list of expenses.
ROI Calculator: Return on Investment and Payback Period
Return on investment, annualized return and payback period, with the solution.
Margin and Markup Calculator: Profit and Selling Price
Margin and markup from cost and price, and the selling price for a target margin or markup.
Present and Future Value, NPV and IRR Calculator
Future and present value, savings with regular deposits, NPV and internal rate of return.
Depreciation Calculator: Straight-Line and Accelerated Methods
Depreciation by the straight-line, declining-balance and sum-of-years methods, with a yearly table.
Tip Calculator and Bill Splitter
Tip amount, total and each person's share when splitting a bill.
Currency Conversion by Your Own Rate and Cross Rate
Convert an amount at a rate you enter, with a fee, and calculate a cross rate.
Inflation Calculator: Price Growth and Purchasing Power
Future price, purchasing power, average inflation from prices and cumulative inflation over several years.
GDP Calculator: Expenditure Approach, per Capita and Growth
GDP by the expenditure approach, GDP per capita, growth rate and real GDP via the deflator.
Russian Utility Subsidy Calculator
An estimate of the Russian housing and utility subsidy from income and costs.
Russian Length of Service Calculator
Work periods added up into years, months and days, handling overlaps.
Debt Payoff Calculator: One Debt and Several Cards
The time to repay with a given payment and a payoff plan for several debts and credit cards.
Debt Consolidation Calculator: Is It Worth It
Compare current debts with one new loan: payment, term and total gain.
Loan Rate and APR Calculator
The rate from a payment and an estimate of the full cost of a loan with fees.
Cash Back or Low Interest Calculator
Compare buying on credit with cash back or with a low rate.
Loan Balance Calculator: Remaining Debt
The remaining debt on a loan after a given number of payments.
Lease Calculator: Payment, Cost Increase, Down Payment
The payment, total and cost increase of a lease with a down payment and residual value.
Investment Calculator: Term, Rate, Deposit, PV and FV
The final or starting amount, monthly deposit, term or return of an investment.
Annuity Calculator: Accumulation, Payout, Perpetuity
Savings from deposits, payout size and the present value of a perpetuity.
Bond Calculator: Price, Yield and Duration
The price, yield to maturity and duration of a bond.
Mutual Fund Calculator: Growth After Fees
The growth of a fund investment after a management fee and a purchase load.
College Cost Calculator: Future Cost and Monthly Saving
The future cost of education and the amount to save per month.
Break-Even Calculator: Volume and Revenue
The sales volume and revenue with neither profit nor loss.
Operating and Financial Leverage Calculator
The operating, financial and total leverage of a business.
Inventory Turnover Calculator: Ratio and Days
The inventory turnover ratio and the days per turn.
Economic Order Quantity Calculator (EOQ)
The optimal order size, the number of orders and the costs by Wilson’s formula.
Café Profitability Calculator: Profit and Payback
The revenue, costs, profit and payback of a café or a small venue.
Salary Converter: Hour, Week, Month, Year
Convert pay between an hour, day, week, month and year.
Is It Worth Going Back to Work Calculator
Compare income and costs with and without going to work.
Retirement Savings Calculator: Contribution and Payout
What you save by retirement, the contribution needed, and a lump sum versus monthly payouts.
Mortgage Calculator: Payment, Early Repayment, Deduction
The mortgage payment with tax and insurance, early payments and the Russian tax deduction.
Housing Affordability Calculator: Price, Rent, Down Payment
What home and rent your income allows, and the down payment and time to save it.
Rent vs Buy Calculator: Comparison over a Chosen Period
A mortgage or renting and investing the difference, with wealth compared year by year.
Refinance Calculator: Gain and Payback of a New Loan
Whether a new loan pays off: the payment, the total paid and the payback of the costs.
Rental Property Calculator: Yield, Payback, Cash Flow
The rental yield, payback, return including a sale and cash flow with a loan.
Loan Chances Calculator: A Rough Estimate
A rough score from debt load, credit history and job tenure. Banks have their own methods.
Family Budget and Event Estimate Calculator
Family spending by item, what is left, and an estimate for a wedding or other event.
Russian Income Tax Calculator: 2026 Scale and Payroll
Russian income tax for 2026, dividends, employer contributions and the total tax load.
Russian Simplified Tax and Sole Trader Contributions
The Russian simplified tax at 6% and 15% and sole trader contributions for 2026.
Russian Home Sale Tax and Deduction Calculator
The tax on a home sale in Russia and the income tax refund on a purchase.
Russian Tax Fine and Penalty Interest Calculator
The fine for a late return, penalty interest on tax and a contract penalty in Russia.
Russian Court Fee Calculator: by Claim and Court
The Russian court fee by claim amount for general and arbitration courts.
Russian INN and OGRN Check Digit Validator
Verifies the check digits of Russian INN, OGRN and OGRNIP numbers in your browser.
Russian Vacation Pay Calculator
Russian vacation pay from average earnings over 12 months, with partial months.
Russian Late Pay Compensation Calculator
Compensation for late pay under Article 236 of the Russian Labor Code.
Russian Insurance Pension Calculator
An estimate of the Russian insurance pension from points or salary and years of work.
Calculators for loans, inflation, returns, margin and budgeting, plus economic indicators, solved step by step.
- Loan Calculator — Monthly payment, total interest and repayment schedule for amortized and declining-balance loans.
- ROI and Payback — Return on investment, annualized return and payback period, with the solution.
- Margin and Markup — Margin and markup from cost and price, and the selling price for a target margin or markup.
- PV, FV and IRR — Future and present value, savings with regular deposits, NPV and internal rate of return.
- Depreciation — Depreciation by the straight-line, declining-balance and sum-of-years methods, with a yearly table.
- Tip Calculator — Tip amount, total and each person's share when splitting a bill.
- Currency Conversion — Convert an amount at a rate you enter, with a fee, and calculate a cross rate.
- Budget — Split income by the 50/30/20 rule and find what is left after a list of expenses.
- Inflation — Future price, purchasing power, average inflation from prices and cumulative inflation over several years.
- GDP — GDP by the expenditure approach, GDP per capita, growth rate and real GDP via the deflator.