Can I Refinance My Mortgage? This calculator can help determine whether it makes sense to refinance your mortgage. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content Annuity Comparison This calculator compares a hypothetical fixed annuity with an account where the interest is taxed each year. How to Retire Early Retiring early sounds like a dream come true, but it’s important to take a look at the cold, hard facts. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates.