Mortgages
Mortgage Payment
Explore how loan amount, interest rate, and term affect your mortgage payment.
“What if I chose a shorter amortization?”
The calculator lineup
A tool for your
next “what if?”
From your first loan to your future plans. Eleven focused calculators, designed around the decisions you want to explore.
The Finstrument app is in development. This is a preview of the planned calculator lineup; calculators aren’t available to use on this website yet.
11 planned calculators
Mortgages
Mortgage Qualification
Estimate borrowing capacity using income, debt, and clearly stated lending assumptions.
“What if my income or down payment changed?”
Mortgages
Mortgage Payoff
Explore how extra payments could change your payoff date and total interest.
“What if I added $500 each month?”
Loans & debt
General Loan Payment
Estimate payments and total interest for an installment loan.
“What if I borrowed less or shortened the term?”
Loans & debt
Auto Loan Payoff
Compare payment strategies for paying off a vehicle loan.
“What if I made an extra payment each year?”
Loans & debt
Personal Loan Payoff
Explore the time and interest implications of paying extra on a personal loan.
“What if I increased my monthly payment?”
Loans & debt
Credit Card Payoff
Explore payoff timelines using payment amounts and explicit interest assumptions.
“What if I paid more than the minimum?”
Loans & debt
Debt-to-Income Ratio
See how monthly debt obligations compare with gross monthly income.
“What if I paid off one of my debts?”
Saving & investing
Inflation
Explore how changing prices could affect future purchasing power.
“What could today’s expenses cost in 20 years?”
Saving & investing
Compound Interest
Project how contributions, time, and assumed returns could influence growth.
“What if I started earlier or saved more?”
Saving & investing
Portfolio Withdrawal
Explore how withdrawals, assumed returns, and inflation affect a portfolio over time.
“What if I adjusted my annual withdrawals?”
Your next move starts with “what if?”
Find the calculator for the question on your mind.