Frequently asked questions

Commit known values with EXE, select a solvable unknown, and check timing/frequency. Blank is not zero; follow the missing-value/range message. TVM requires N>0 and N≤12000, with finite known values of absolute magnitude at most 10^15.

Use EXE to evaluate/store a known value or expression. Use SOLVE on the selected unknown with no pending draft; EXE does not solve an unknown.

They are money you pay out in a savings example; the final FV is a receipt. Loan cash flows can have the opposite direction. Keep one consistent perspective.

Enter 5 for 5%; 0.05 means 0.05% in this field. This nominal annual rate is converted to an equivalent payment-period rate using P/Y and C/Y.

N counts payment periods: 60 periods at P/Y=12 is five years. These TVM examples use P/Y=12; periods equal years only when P/Y=1. Fractional N uses compound interpolation; verify the rounded-up complete payment count separately.

P/Y is annual payment frequency; C/Y is annual compounding frequency for the nominal rate. Monthly payments with annual compounding use P/Y=12 and C/Y=1; they are not interchangeable.

The previous answer belongs to the old assumptions. The calculator clears dependent solved values to prevent stale results. Store the new conditions, select the unknown and SOLVE again.

Known flows need both positive and negative directions. The core searches its supported numerical range and reports no identifiable root, non-convergence or multiple roots. Arbitrary flows need not have one unique rate, and the solver does not guarantee identification of every mathematical root.