Selurio
Calculators
Free financial calculators — each one explains its formula and assumptions, with no buy or sell signals.
Investing passport
Your passport is empty — and that is the invitation.
Sixteen tools, grouped into five themes. Start with the basics; the stamps appear on their own as you calculate.
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Growth foundations
How time, contributions and inflation shape a single number.
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Safety and risk
Your buffer, your debts and what you already own.
0/3
Costs and taxes
The quiet charges that take a slice of the result.
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Goals and freedom
From a concrete sum to the day work becomes a choice.
0/3
Company analysis
How to read a company through its own numbers.
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Stamps
- First stampLocked. Get a result out of your first calculator.
- FoundationsLocked. Every tool in the “Growth foundations” theme.
- Safety netLocked. Every tool in the “Safety and risk” theme.
- Fee hunterLocked. Every tool in the “Costs and taxes” theme.
- Sense of directionLocked. Every tool in the “Goals and freedom” theme.
- Balance sheet readerLocked. Every tool in the “Company analysis” theme.
- Full passportLocked. All sixteen tools ticked off.
Your progress lives only in this browser — anonymous, no account, no server.
Compound interest
How contributions and compounding grow over time.
Real return
The real value of money after inflation.
DCA
Regular investing vs a lump sum.
FIRE
How many years to reach financial independence.
PEG (Peter Lynch)
Valuing a stock relative to its earnings growth.
Capital gains tax on shares
Gross gain, tax due and net result under the BG framework.
Passive income from dividends
How much capital and how many shares you need for a target monthly income.
ETF fees (TER)
How an annual fee eats into returns over decades.
Dividend yield
Gross and net yield of a share relative to price and tax.
Savings goal
What monthly contribution you need to reach your goal.
Net worth
Assets minus liabilities and the debt-to-assets ratio.
Emergency fund
How large a reserve you need and how long it takes to build.
Return (ROI)
Total and annualized return on an investment over a given period.
Loan repayment
Your monthly payment, total interest and remaining balance on an amortizing loan.
Company cycle profile
Cash-flow phase and what usually follows in Bulgaria — in a normal year and in a recession.
Financial health
Altman Z″ and capital structure (RE/TE) from balance-sheet data.