Tax, loans, savings, pay and calculations for professionals. Choose a tool and read its instructions, examples and limits before you begin.

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Finance and business

VAT calculator

Add VAT to a net amount using a rate of your choice.

Remove VAT

Extract VAT from a gross total to find the net amount and tax.

Compound interest calculator

Simulate compound interest with monthly contributions and an annual breakdown.

Simple interest calculator with your own rate

Calculate simple interest and the final balance from your principal, rate and time period. Review the formula and steps using the rate you provide.

Tip calculator and bill splitter

Split a bill between people, add an optional tip and check the amount each person owes. See the total, tip and rounding adjustments.

Mortgage payment

Estimate a fixed nominal-rate mortgage payment with a monthly schedule. Rounded to cents with an adjusted final payment; fees and variable rates excluded.

Loan payment

Calculate a fixed nominal-rate loan payment and interest cost. 1–600 monthly payments; extra fees excluded. Final payment adjusted to the remaining balance.

Amortization schedule

Generate a fixed-payment monthly amortization schedule: principal, interest and remaining debt. Export CSV. Fixed nominal rate, exact cents, adjusted final payment.

APR calculator

Estimate APR from principal, equal monthly payments and entered fees. Solves cash-flow present value with equal months. Does not replace contractual APR.

Savings plan simulator

Simulate a savings plan with initial capital, monthly deposits and constant effective annual return. Annual table and CSV; excludes tax, costs and inflation.

ROI calculator

Calculate ROI as net profit divided by investment cost. Revenue or final value and costs must cover the same period; the return is not annualized.

ROAS calculator

Calculate attributed revenue divided by advertising spend. A 3× ROAS equals 300% of ad costs and does not measure net profit.

Margin and markup

Distinguish margin on price from markup on cost. Cost 60 and price 100 gives 40% margin and 66.67% markup. Use values excluding VAT for a consistent comparison.

Business break-even

Find units needed to cover fixed and variable costs. Rounds units up; unit price must exceed variable cost. Single-product model.

Selling price

Find selling price from cost and target margin or markup. Margin must be below 100%. Currency result rounded up to cents, without automatic VAT.

Inflation calculator and purchasing power

Compare money across years using official World Bank/IMF CPI data. Choose a country and available years to calculate cumulative inflation and purchasing power.

IBAN checker

Check IBAN format, national length and checksum in your browser. Your bank account number is not sent to a banking service.

Work and pensions

Italian salary: gross and net 2026

Estimate Italian net salary from gross pay or find gross pay from net income for 2026. Adjust contributions, local taxes and payments, with an annual breakdown.

Italian pension: gross and net 2026

Estimate Italian net pension from gross income for 2026, or reverse the calculation. View annual tax, pension deductions and the monthly average over 13 payments.

Hourly wage calculator: gross pay and hours

Calculate gross pay from hours and your hourly rate, or work out an hourly wage from gross earnings. Set the hours and period; taxes are not calculated.

Mileage reimbursement calculator

Calculate mileage reimbursement with your own rate, IRS rates by travel date or French passenger car tables. Check distance units, sources and validity periods.

You may also need

Useful tools from other categories. They are not included in the primary count.

Work hours and breaks

Calculate worked hours from intervals, overnight shifts and additional breaks.

Percentage calculator with formulas and steps

Calculate a percentage of a number, find the percentage between two values, or work out an increase or decrease with clear formulas and steps.