ttl's Tape and Tax Calculator

Arithmetic and tax calculators linked to a tape list and a 1:2 apportionment calculator. Columns in the tape vary to cater for arithmetic calculations or for tax calculations that use one or two or three different tax types and tax rates. Store up to 20 different user defined tax settings. Quickly switch the basis for a calculation. Preview a complete tape before printing or save it. Use total keys to add up calculations. Use the Undo key to correct errors.