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Study tools

Free calculators and reference tables for accounting and finance study. Every one shows its formula, so you can check the answer by hand.

  • No sign up
  • Nothing leaves your browser
  • Works on a phone
  • Prints clean

Time value of money

Discounting, compounding and the three questions that come out of them: what is it worth today, what return does it earn, and what does the repayment look like.

Present value and annuity tables

The four factor tables, printed to four decimals. Type a rate the tables do not carry and the grid grows a column for it.

  • Rates 1 to 20%
  • Periods 1 to 50
  • Formula on each table
  • Prints A4
Open the tables

NPV and IRR calculator

Enter your own cash flows and read the value, the return and both payback figures. The profile shows where the curve crosses zero.

  • NPV and IRR
  • Payback, discounted
  • Every IRR when there is more than one
  • Prints A4
Open the calculator

Loan amortisation schedule

The payment, and where each one goes. Marks the period principal first passes interest, which on a 30 year loan lands later than most people expect.

  • Full schedule
  • Crossover period
  • Set your own payment
  • Prints A4
Open the schedule

Interest rates

What a quoted rate actually costs once you account for how often it compounds, and the rate per period the other tools ask for.

Effective and nominal rate converter

A rate quoted as 12% is only 12% if it compounds once a year. Convert either way, at seven frequencies, and read off the rate per period.

  • Both directions
  • Seven frequencies
  • Continuous included
  • Rate per period
Open the converter

What is coming next

Tools are built one at a time and each is checked against worked examples before it ships. These are the ones in the queue.

  • Depreciation schedules
  • Lease liability and right of use
  • Break even and CVP
  • WACC and CAPM
  • Audit materiality