Finance & Loan Calculators
Financial decisions are some of the most consequential choices most people make. A mortgage you can't comfortably afford doesn't just strain your monthly budget — it limits your career flexibility, your ability to save for retirement, and your financial options for the next 30 years. These calculators exist to help you run the numbers before you commit, not after.
Mortgage and home loan calculators
Our mortgage suite covers the full home-buying journey. The mortgage calculator estimates your monthly payment including principal, interest, property taxes, insurance, and PMI. The affordability calculator works in reverse — it takes your income, debts, and down payment and tells you the loan size you can realistically qualify for and comfortably carry. The loan comparison calculator lets you put two lenders side by side, accounting for different rates, terms, and closing cost structures so you can identify which is genuinely cheaper over the full loan life. The amortization calculator shows exactly how much of each payment goes toward principal versus interest, which most people find genuinely surprising the first time they see it.
Home equity calculators: HELOC vs. home equity loan
If you already own a home, your equity is an asset you can borrow against — but HELOC and home equity loan products work very differently. A HELOC is a revolving line of credit with a variable rate tied to Prime; a home equity loan delivers a fixed lump sum at a fixed rate. The interest rate, payment structure, and repayment risk profile of each product is distinct. Our HELOC calculator shows you draw-period payments versus full repayment-period payments, the payment jump that catches many borrowers off guard. The home equity loan calculator computes your monthly payment with a fixed amortization schedule. The comparison calculator lets you run both scenarios on the same borrowed amount.
Personal finance and budgeting calculators
Beyond home loans, the finance category covers compound interest, savings projections, debt snowball payoff planning, the 50/30/20 budget framework, Coast FIRE retirement projections, and credit card payoff timelines. These tools share a common purpose: translating abstract financial concepts into concrete dollar amounts and timelines that make decision-making more concrete. The compound interest calculator, for example, shows not just what a savings balance grows to, but also what delaying contributions by five or ten years actually costs — which most people significantly underestimate.
How we build and verify finance calculators
Every finance calculator on Front Desk is built against primary sources: IRS publications for tax-related calculations, Fannie Mae and Freddie Mac guidelines for mortgage calculations, and Federal Reserve published data for rate benchmarks. Our CPA, Priya Nair, reviews all tax-related calculators annually. Marcus Webb, who has 15 years in mortgage lending, oversees all home loan calculators. Where formulas are standardized across the industry — mortgage amortization, compound interest, debt payoff math — we verify our outputs against multiple independent sources before publishing.
Calculators in this category
Frequently asked questions
How accurate are your mortgage calculators?
Our calculators use the standard amortization formula used by every lender and are accurate for fixed-rate loans. Estimates for taxes, insurance, and PMI are based on your inputs and may vary from actual lender quotes. For a binding payment estimate, request a Loan Estimate from a licensed lender.
Do I need to create an account to use the calculators?
No. All calculators on Front Desk are completely free and require no account or email address. Your inputs are processed entirely in your browser and are never transmitted to our servers.
Can I use the mortgage calculator if I'm not in the US?
The calculators use US-standard loan structures. Canadian, UK, and other mortgage products calculate differently (e.g., Canadian mortgages compound semi-annually, not monthly). The calculators will produce incorrect results for non-US loan structures.
Related guides
How to Compare Mortgage Rates: A Step-by-Step Guide
By Marcus Webb · 9 min read
HELOC vs. Home Equity Loan: Which Is Right for Your Situation?
By Priya Nair · 8 min read
Debt-to-Income Ratio Explained: What Lenders Look For
By Marcus Webb · 7 min read
Understanding Mortgage Amortization: How Your Payments Break Down
By Marcus Webb · 7 min read