Does this calculator include taxes, insurance, or PMI?

No. It focuses only on principal-and-interest payments so you can isolate the impact of the interest rate and term change. To understand your full monthly housing cost, you will need to add property taxes, homeowners insurance, mortgage insurance, and HOA dues separately.

What if I plan to pay closing costs in cash instead of rolling them in?

You can still use the breakeven logic by entering your closing costs in the input and interpreting breakeven months as the time needed for monthly savings to recover your cash outlay. Just keep in mind that the new principal in the model assumes costs are rolled in; if you pay them in cash, your real principal and interest savings will be slightly better than shown.

Can I use this for non-mortgage loans?

Yes, as long as the loans are fixed-rate, fully amortizing loans. The concepts of payment change, breakeven on closing costs, and interest savings apply to other installment loans as well, though "closing costs" may take the form of origination fees or other charges.

How does this relate to official HASP/HAMP programs?

This calculator is inspired by stability-plan style comparisons but does not implement official program rules, eligibility criteria, or modification tiers. It is a generic refinance comparison tool for educational purposes.

Should I refinance if the calculator shows small savings?

Small savings with a long breakeven period may not justify the effort and cost of refinancing, especially if you might move or refinance again soon. Use this tool as a starting point and then consult with your lender or financial advisor to weigh all factors—including risk, flexibility, and other debts—before deciding.

finance calculator

Homeowner Affordability & Stability (HASP/HAMP) Refi

Compare your current mortgage payment and total interest to a stability-plan style refi with a lower rate/longer term, including closing-cost breakeven.

Results

Current monthly payment (P&I): $2,161
New monthly payment (P&I): $1,789
Monthly savings: $372
Closing costs (modeled): $4,000
Breakeven months on costs: 10.77
Total interest (current path): $328,199
Total interest (new path): $320,090
Interest saved vs current: $8,108

Overview

Refinancing your mortgage can improve affordability by lowering your interest rate, extending your term, or both—but it comes with closing costs and may increase total interest if you stretch payments over more years. Programs like the old Homeowner Affordability and Stability Plan (HASP/HAMP) highlighted these trade-offs for borrowers looking for payment relief.

This homeowner affordability & stability refinance calculator lets you compare your current loan to a stability-plan-style refi. By entering your current balance, rate, and remaining term along with a proposed new rate, new term, and closing costs (assumed financed into the new loan), you can see how your monthly payment changes, how long it takes to recoup costs, and how total interest compares between staying put and refinancing.

How to use this calculator

Enter your Current loan balance, Current rate (APR), and Remaining term in years for your existing mortgage.
Enter the proposed New rate (APR), New term (years), and Closing costs you expect to pay (if you plan to roll costs into the loan, enter them here; if paying in cash, you may set this to zero or adjust logic separately).
The calculator computes your current and new principal-and-interest payments and shows the Monthly savings (or increase) in P&I.
Review the Breakeven months on closing costs to see how long it takes for monthly savings to cover the costs of refinancing.
Compare Total interest (current path) versus Total interest (new path) and Interest saved vs current to understand the long-term cost or savings of the refinance.
Experiment with different new rates, terms, and closing-cost assumptions—such as a shorter term at a lower rate or paying costs in cash—to see how they affect payment and interest trade-offs.

Inputs explained

Current loan balance: Your existing mortgage principal balance at the time you’re considering refinancing. This is the amount you still owe on the current loan.
Current rate (APR %): The annual percentage rate on your existing mortgage, expressed as a percentage. The calculator converts this to a monthly rate to compute your current principal-and-interest payment.
Remaining term (years): How many years are left on your current mortgage. For example, if you are three years into a 30-year loan, your remaining term is around 27 years.
New rate (APR %): The proposed annual percentage rate for the new refinanced mortgage. Typically this is lower than your current rate, but you can test scenarios where the rate is similar and the term changes.
New term (years): The length of the new loan in years. Extending the term (for example, going back to 30 years) can lower the monthly payment but often increases total interest, while shortening the term (for example, 20 or 15 years) can increase the payment but reduce total interest dramatically.
Closing costs rolled in: The dollar amount of refinance closing costs you plan to finance into the new loan rather than paying in cash. These are added to the current balance to form the new principal in the refinance scenario.

How it works

First, we compute your current monthly principal-and-interest payment using your current balance, current interest rate (APR), and remaining term in years. This uses the standard fixed-rate mortgage payment formula.

Next, we add closing costs (if any) to your current balance to form the new loan principal in the refinance scenario, assuming those costs are rolled into the new loan instead of paid in cash.

We compute a new monthly principal-and-interest payment based on the combined principal (balance + closing costs), new interest rate, and new term in years.

Monthly savings is the difference between your current payment and new payment (current − new). If positive, your monthly out-of-pocket P&I cost has dropped.

To estimate breakeven months on costs, we divide the closing costs by the monthly savings: Breakeven months ≈ Closing costs ÷ Monthly savings. This is how long it takes for lower payments to offset the refinance costs under the simplified model.

We then simulate both scenarios over their respective life spans to calculate total interest: what you would pay in interest if you keep the current loan to maturity versus what you would pay in interest on the new loan. The difference is reported as interest savings (or extra interest) in the refinance scenario.

Formula

Current P&I = standard fixed-rate payment using currentBalance, currentRate, remainingTermYears\nNew principal = currentBalance + closingCosts (if rolled in)\nNew P&I = standard payment using new principal, newRate, newTermYears\nMonthly savings = Current P&I − New P&I\nBreakeven months ≈ closingCosts ÷ Monthly savings\nTotal interest (each scenario) ≈ (Total payments over term) − Principal

When to use it

Checking whether a refinance significantly improves monthly affordability (lower P&I) for a homeowner under a stability‑style plan, without ignoring the cost of refinance fees.
Comparing the effect of dropping your interest rate versus extending your term on both your monthly payment and total interest over the life of the loan.
Estimating how many months you need to stay in the loan after refinancing for the monthly savings to pay back closing costs and begin producing net savings.
Evaluating whether a shorter new term (such as moving from 30 years to 20 or 15) is feasible for your budget while reducing long‑run interest.
Using breakeven and interest-savings numbers to guide discussions with lenders, counselors, or co‑borrowers when considering whether to refinance.

Tips & cautions

If your goal is stability and payment relief, focus on Monthly savings and Breakeven months—but also check how much extra interest you might pay if you extend the term significantly.
If you expect to sell the home or refinance again in a few years, set the comparison mindset around whether you will reach breakeven before that time; if not, a refinance might not be worth the costs.
Consider testing a refinance into a shorter term at a better rate. While the payment may not fall as much—or may even rise—total interest could drop substantially, which may be attractive if your income can support it.
Be mindful that rolling closing costs into the loan increases your principal and slightly raises total interest; if you have cash available, comparing scenarios with costs paid upfront versus financed can be informative.
Always factor in taxes and insurance separately when thinking about your total housing payment, even though this calculator focuses on principal and interest only.
This is a simplified fixed-rate P&I comparison. It ignores escrow items such as property taxes, homeowners insurance, HOA dues, and mortgage insurance, all of which affect your true monthly housing cost.
Assumes fixed rates and fully amortizing loans under both scenarios. Adjustable-rate mortgages, interest‑only periods, or other non‑standard structures are not modeled.
Treats closing costs as a single amount financed into the new loan; it does not break out individual fees, points, or lender credits, nor does it account for tax deductibility of certain costs.
Does not consider opportunity cost of using cash to pay closing costs upfront versus financing them, nor does it account for the impact on your overall financial plan (such as retirement savings).
Does not implement specific program rules from HASP/HAMP or modern equivalents; it is intended as a generic stability‑style refi comparison tool.

Worked examples

Example 1: Lower rate, longer term for payment relief

Current balance = $320,000; current rate = 6.5%; remaining term = 25 years.
New rate = 5.25%; new term = 30 years; closing costs rolled in = $4,000.
Calculator computes current P&I and new P&I; suppose monthly savings is about $250.
Breakeven months ≈ 4,000 ÷ 250 = 16 months—after about 1 year and 4 months, payment savings exceed closing costs.
Total interest comparison shows whether the lower rate offsets the extra years in the term or whether total interest still rises despite payment relief.

Example 2: Refinancing into a shorter term

Same current loan: $320,000 at 6.5% with 25 years remaining.
New rate = 5.0%; new term = 20 years; closing costs rolled in = $3,000.
Monthly payment may increase slightly, but total interest over the life of the new loan drops by tens of thousands of dollars compared with staying in the current loan.
Breakeven logic using monthly savings may not be meaningful here because the goal is faster payoff and interest savings rather than immediate payment reduction.

Example 3: Close call on breakeven

If a refinance only leads to $50 per month in savings but closing costs are $4,000, breakeven months ≈ 4,000 ÷ 50 = 80 months (over 6.5 years).
If you expect to move or refinance again in less time, it may not be worth paying those costs for such a small monthly benefit.
The calculator helps highlight such marginal scenarios so you can make a more informed call.

Deep dive

Estimate savings from a homeowner stability–style refinance by comparing your current mortgage payment and total interest to a new loan with different rate and term, including breakeven months on closing costs.

Enter your current balance, rate, remaining term, proposed new rate/term, and closing costs to see whether refinancing meaningfully lowers payments and how it affects total interest over the life of the loan.

FAQs

Does this calculator include taxes, insurance, or PMI?: No. It focuses only on principal-and-interest payments so you can isolate the impact of the interest rate and term change. To understand your full monthly housing cost, you will need to add property taxes, homeowners insurance, mortgage insurance, and HOA dues separately.
What if I plan to pay closing costs in cash instead of rolling them in?: You can still use the breakeven logic by entering your closing costs in the input and interpreting breakeven months as the time needed for monthly savings to recover your cash outlay. Just keep in mind that the new principal in the model assumes costs are rolled in; if you pay them in cash, your real principal and interest savings will be slightly better than shown.
Can I use this for non-mortgage loans?: Yes, as long as the loans are fixed-rate, fully amortizing loans. The concepts of payment change, breakeven on closing costs, and interest savings apply to other installment loans as well, though "closing costs" may take the form of origination fees or other charges.
How does this relate to official HASP/HAMP programs?: This calculator is inspired by stability-plan style comparisons but does not implement official program rules, eligibility criteria, or modification tiers. It is a generic refinance comparison tool for educational purposes.
Should I refinance if the calculator shows small savings?: Small savings with a long breakeven period may not justify the effort and cost of refinancing, especially if you might move or refinance again soon. Use this tool as a starting point and then consult with your lender or financial advisor to weigh all factors—including risk, flexibility, and other debts—before deciding.

Related calculators

finance

Loan Rate Comparison / Refinancing

Compare two loan options side by side with rates, points, fees, and monthly payments. See monthly savings and a simple break-even on upfront costs.

finance

Mortgage Payment Calculator

Estimate your monthly mortgage payment, total interest, and payoff schedule with one input-driven tool.

finance

PITI Mortgage Payment Calculator

Estimate principal & interest plus property tax, insurance, and HOA to see your total monthly PITI payment.

This homeowner stability refinance calculator provides simplified estimates of payment changes, breakeven timing, and total interest differences between an existing fixed-rate loan and a proposed new loan. It does not account for taxes, insurance, mortgage insurance, adjustable rates, prepayment penalties, or specific program rules, nor does it constitute a loan estimate, offer of credit, or personalized financial advice. Always review official loan disclosures and consult with your lender and qualified advisors before refinancing.