I will provide a template for mortgage calculator

This Excel spreadsheet lets you analyze a fixed or variable rate home mortgage. You can set up periodic extra payments, or add additional payments manually within the Payment Schedule. Use the spreadsheet to compare different term lengths, rates, loan amounts, and the savings from making extra payments. It also calculates the outstanding balance at the end of a specified number of years and the tax returned if the interest paid is tax-deductible.

Caution: This spreadsheet should not be construed or taken as financial advice. The results may not be exact, and may not apply to your specific situation exactly. Please consult a qualified professional regarding financial decisions.