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rate

Periodic interest rate for an annuity.

v = rate(nper, pmt, pv, fv, type, guess)

Solves iteratively for the periodic interest rate. guess (default 0.1) is the initial estimate; convergence may fail for ill-conditioned problems.

rate(30*12, -1500, 200000) * 12 % annual rate
  • nper — Number of payment periods for a loan or investment.
  • pmt — Periodic payment for a loan or annuity.
  • pv — Present value of an investment.
  • fv — Future value of an investment.