Calculators and tools Quick and easy to use – our online calculators and tools will give you the information you need, in a matter of minutes. Talk to us Phone us Email us Breadcrumbs Teachers Mutual Bank Calculators and tools Calculators and tools Quick and easy to use – our online calculators and tools will give you the information you need, in a matter of minutes. Home loan calculators Choose the calculator that applies to your home buying scenario below. Where can I buy? Need to work out your monthly repayments? How much stamp duty could you pay? How much can I borrow? Need to compare two home loan rates? What could your home loan repayments be? How much could extra loan repayments help? What difference could a lump sum repayment make? Use our home loan key facts sheet Insurance Estimate the value of your home Estimate your home contents value? Personal loan & Term deposits What could your Personal loan repayments be? How much interest could you earn? Savings & credit cards What could your savings look like? What could your credit card repayments be? Tools Create a budget planner Currency converter Income tax Back to top.