Mortgage, Loan & LOC Calculator

Run the numbers

A Calculator That Handles the Real Cases

A quick estimate for a purchase is one thing — but real loans have payment gaps, extra payments and different ways interest gets calculated. This tool handles all of it: mortgages, personal loans and lines of credit, with a full year-by-year (expandable to month-by-month) breakdown of exactly where every dollar goes.

Loan Details

Loan Amount

Interest Rate (annual)

Interest Method

Every payment clears accumulated interest first, then whatever's left reduces principal. Compound calculates each period's interest on the current (declining) balance — standard mortgage math. Simple calculates it on the original loan amount instead, unaffected by paydown.

Regular Payments

Yes: the calculated monthly payment applies automatically every period, like a normal loan. No: nothing is assumed — only what you enter below reduces what's owed. Interest keeps accruing either way.

Amortization Period

yrs

How long the loan is scheduled to take to pay off in full.

Loan Start Date

When the loan closes or funds. First Payment Date below defaults to one month after this — override it if there's a gap before payments actually start. Defaults to today.

First Payment Date

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Payments

Payment — Every Month

Payments on Specific Dates

Add a one-time payment on any date — a bonus in June, a tax refund in April, whatever comes up. Add as many as you like; the schedule recalculates every time.

DateAmount

No extra payments added yet.

Payment & Payoff

Monthly Payment

—

Payoff Date

—

Total Interest

—

Total Cost

—

Impact of Your Payments

New monthly payment—

New payoff date—

Interest saved—

Time saved—

Year	Principal Paid	Payments	Interest Paid	Accumulated Interest	Remaining Balance

Estimates only, for illustration purposes — actual payments, rates and amortization depend on your lender's terms. Not financial, mortgage or legal advice. Speak to a licensed mortgage professional before making a decision.

A Calculator That Handles the Real Cases

Payments

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