This free loan payment calculator for Windows allows you to quickly calculate and compare mortgage loan payments based upon variable payment frequency! Offers Daily 365/year, Daily 360/year, Weekly, Biweekly 26/year, Bimonthly 24/year, Monthly, Quarterly, Biannual, and Annual payment periods. It allows you to compare two loans side-by-side and calculates Principal, Interest, Taxes and Insurance (PITI).