Home›Tax Savings Calculator Tax Savings Calculator Determine the estimated tax savings with a new loan. Tax Savings CalculatorLoan amountInterest rateLoan termAnnual property taxesYour marginal tax rateEstimated tax savings, first year–Per month–Mortgage interest, first year–Monthly P&I after tax savings–Estimates for illustration only. Actual terms depend on the lender, your credit and current market rates.