Calculators for investors
Free tools, no sign-up, for the sums investors in government bonds, ETFs and shares do most often: what a bond really yields, how much stamp duty you pay, how far a monthly plan can grow.
BTP yield calculator
Gross and net yield to maturity, accrued interest, coupons and duration of a government bond.
Stamp duty and IVAFE calculator
Italian stamp duty with an Italian broker, IVAFE with a foreign one, IVCA on crypto-assets.
Compound interest calculator
How capital grows with regular contributions, nominal and net of inflation.
DCA vs lump sum
Invest a sum all at once or spread it over months: the comparison.
FIRE calculator
In how many years your assets reach 25 times your annual expenses, with the 4% rule.
Inflation calculator
How much idle money loses, and how much you would need to keep its purchasing power.
From calculations to your real portfolio
The calculators work on assumptions. PortFolk does the same sums on your own trades: value, return, coupons and dividends received and expected, allocation.
The demo is a sample portfolio, already filled in: it opens without signing up. The Free plan asks for no card.