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(ARM) Adjustable Rate Mortgage Calculator

An adjustable rate mortgage calculator helps estimate monthly payments for loans that begin with a fixed interest period and then adjust over time. This tool is used to evaluate early payment savings and understand how future rate changes may affect affordability.

This calculator is made available to you as an educational tool only and calculations are based on borrower-input information. This is not an advertisement for the above terms, interest rates, or payment
amounts. The above information is meant for educational purposes only, the approximate origination charges, and total approximate funds needed to close is just an illustration and may not be accurate to your personal loan scenario. Actual fees and costs and payments may vary. As a result of refinancing, your total finance charges may be higher over the life of the loan. This is not a commitment to lend. Not all borrowers will meet the requirements necessary to qualify. Rates and terms are subject to change based on market conditions and borrower eligibility.  Monthly Payment does not include taxes and insurance. Your payment obligation will be higher. APR is not shown – see our website for assumptions and loan terms. Your actual rate, payment, and costs could be higher. Get an official Loan Estimate before choosing a loan. Results received from this calculator are designed for comparative purposes only, and accuracy is not guaranteed. We do not guarantee the accuracy of any information or inputs by users of the software.

How the ARM Mortgage Calculator Estimates Payments

The calculator applies standard amortization formulas during the initial fixed period and then models payment changes after rate adjustments. Many borrowers use an arm calculator to compare starting payments against possible future scenarios.
Inputs used include:
- Loan amount
- Initial interest rate
- Fixed period length
- Total loan term
- Annual property tax
- Annual homeowners insurance
A complete arm calculator mortgage view helps borrowers understand both early and later stage payment behavior.

ARM Loan Structures Explained

ARM loans are defined by how long the initial rate remains fixed and how often it adjusts afterward. A 5/1 arm calculator estimates payments for a loan with a 5 year fixed period followed by annual adjustments.
Other common structures include:
- A 1 5 arm calculator for very short fixed periods
- A 7/1 arm calculator for longer upfront stability
- A 10/1 arm calculator for extended fixed payment planning
Borrowers comparing longer fixed periods often reference a mortgage 7/1 arm calculator to balance early savings with future rate risk.

ARM Monthly Payment Example

Item

Amount

Loan Amount

460000

Initial Interest Rate

5.75

Loan Term

30

Initial Fixed Period

7

Principal and Interest

2687

Property Tax

525

Home Insurance

150

Initial Monthly Payment

3362

This example reflects payments during the fixed period before any rate adjustments occur.

ARM Rate Adjustment Scenario

Interest rate changes can significantly affect payments after the fixed period ends. Borrowers often review risk using a 7 1 arm calculator to see how adjustments impact monthly obligations.

Interest Rate

Monthly Payment

5.75

2687

6.75

2990

7.75

3312

Why Borrowers Use ARM Calculators

Some buyers prioritize lower early payments and use a 5 year arm calculator when planning shorter ownership timelines. Others choose longer fixed periods to reduce uncertainty and improve budgeting accuracy.
The term moment arm calculator is sometimes searched by users outside mortgage contexts, making it important to distinguish financial ARM tools from unrelated engineering concepts.
Homebuyers evaluating properties in Washington, D.C. often use ARM calculators to assess how early payment flexibility fits long term housing costs.

ARM Structure Comparison

ARM Type

Fixed Period

5/1 ARM

5

7/1 ARM

7

10/1 ARM

10

Longer fixed periods provide more payment stability but usually start with slightly higher interest rates.

Frequently Asked Questions
Do ARM payments change immediately
Are ARM loans riskier than fixed rate loans
Can this calculator be used before pre approval
Does escrow affect ARM payments
Are calculator results exact

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