New Mexico mortgage refinance calculator. Enter your new loan amount, rate, and term to see your payment and full amortization. New Mexico homeowners can deduct mortgage interest on the state return — check your New Mexico Schedule A equivalent for current limits.

Home Refinance Calculator

Enter your refinanced loan balance, new rate, and term to see your new monthly payment, total interest, and month-by-month payoff schedule.

New monthly payment (P&I)

$1,896

Detailed results
Total interest on new loan	$382,633
Total repayment amount	$682,633
Monthly payment change	—

What this result means

Refinancing $300,000 at 6.5% for 30 years gives you a $1,896/month payment. Total interest over the new term: $382,633.

Month-by-month amortization schedule

Every payment broken down into principal and interest on the new refinanced loan.

Month-by-month amortization schedule. 360 rows, first 12 shown.
Month	Payment	Principal	Interest	Remaining balance
1	$1,896	$271	$1,625	$299,729
2	$1,896	$273	$1,624	$299,456
3	$1,896	$274	$1,622	$299,182
4	$1,896	$276	$1,621	$298,906
5	$1,896	$277	$1,619	$298,629
6	$1,896	$279	$1,618	$298,351
7	$1,896	$280	$1,616	$298,070
8	$1,896	$282	$1,615	$297,789
9	$1,896	$283	$1,613	$297,506
10	$1,896	$285	$1,611	$297,221
11	$1,896	$286	$1,610	$296,935
12	$1,896	$288	$1,608	$296,647

How this is calculated

M = P · r(1+r)^n / ((1+r)^n − 1)
where P = refinanced balance, r = new rate / 12, n = new term in months

What this calculator does

This calculator shows the payment and total cost of your refinanced mortgage. Enter the new loan amount (your payoff balance, or payoff balance + rolled-in closing costs), the new rate, and the new term. If you enter your current payment, you'll also see the monthly change.

To answer "should I refinance?" — including the break-even point where savings offset closing costs — use the [Mortgage Refinance Break-Even Calculator](/calculators/mortgage-refinance-break-even).

15-year vs. 30-year refinance

Refinancing into a 15-year term typically gets you a lower rate (15-year rates run 0.5–0.75% below 30-year) and cuts total interest dramatically, but the higher payment constrains cash flow. Refinancing into a 30-year resets the clock and maximizes monthly savings, but you pay significantly more interest over the life of the loan — especially if you had already paid down 10+ years on the original loan.

A useful middle path: refinance into a 30-year for payment flexibility, then make extra principal payments when cash allows. The amortization schedule below shows the balance at every month, so you can see exactly how extra payments accelerate payoff.

What's not included

This calculator shows principal and interest only. Your actual mortgage payment also includes property taxes (typically escrowed), homeowner's insurance, and PMI if your equity is under 20%. Add those to the P&I figure to estimate your full monthly outlay.

Rate shopping matters more than most people expect

On a $300,000 refinance, the difference between 6.5% and 7.0% over 30 years is about $100/month and over $35,000 in total interest. Getting quotes from at least 3 lenders — a bank, a credit union, and an online lender — takes less than an hour and can meaningfully reduce your lifetime cost. Rates move daily; lock once you find a rate you're comfortable with.

Assumptions

Standard fixed-rate amortization: equal monthly payments, interest = balance × (rate / 12) each month.
Payment shown is principal and interest only — taxes, insurance, and PMI are excluded.
Rate is fixed for the full new term.
No prepayment penalties are modeled.
Closing costs are not included unless rolled into the loan amount by the user.

Frequently asked questions

›When does it make sense to refinance?

Refinancing typically makes sense when: (1) the new rate is at least 0.5–1% below your current rate, (2) you plan to stay in the home long enough to recoup closing costs, or (3) you want to switch from an ARM to a fixed rate for payment certainty. Use our Mortgage Refinance Break-Even Calculator to find exactly when savings offset costs for your situation.

›How much does it cost to refinance?

Refinancing closing costs typically run 2–5% of the loan amount — for a $300,000 loan that's $6,000–$15,000. Costs include origination fee, appraisal (~$400–$700), title search and insurance, recording fees, and prepaid interest. Some lenders offer no-closing-cost refinances by rolling costs into a higher rate or the loan balance.

›Should I roll closing costs into the loan or pay them upfront?

Paying upfront reduces your loan balance and saves interest over the full term. Rolling costs in raises your balance — on a $300,000 loan with $9,000 in costs at 6.5% for 30 years, rolling them in adds about $57/month and ~$20,000 in lifetime interest. If you're short on cash at closing or plan to sell within a few years, rolling costs in is reasonable; if you're staying long-term, paying upfront is cheaper.

›Does refinancing restart the 30-year clock?

If you refinance into a new 30-year loan, yes — you reset to month 1 of a new 360-month schedule. This lowers your payment but means you're paying mostly interest again in early payments. If you had 20 years left on your original loan and refinance into 30 years, you're extending your payoff date by 10 years. To avoid this, consider refinancing into a 15- or 20-year term, or making extra principal payments.

›What credit score do I need to refinance?

Conventional refinance loans generally require a 620 minimum score, but the best rates (typically 0.5–1% lower than minimum-qualifying rates) go to borrowers with 740+. FHA streamline refinances may allow lower scores. Your debt-to-income ratio (total monthly debt payments ÷ gross monthly income) also matters — lenders prefer DTI under 43%, with the best terms often below 36%.

›Can I take cash out when I refinance?

Yes — a cash-out refinance replaces your existing mortgage with a larger loan and gives you the difference in cash. Most lenders allow you to borrow up to 80% of your home's appraised value (leaving 20% equity). Cash-out rates are often 0.125–0.5% higher than rate-and-term refinances. Enter your new (larger) loan amount into this calculator to see the payment on a cash-out refi.

›How does refinancing affect my taxes?

Mortgage interest on a primary residence is deductible on Schedule A if you itemize, subject to the $750,000 loan limit (for loans originated after Dec 15, 2017). Points paid to buy down the rate on a refinance are NOT fully deductible in the year paid — they must be amortized over the loan term. Points on the original purchase are deductible in year 1. Consult a tax professional for your specific situation.

›What is a no-cost refinance?

A no-cost refinance means you pay $0 in closing costs at the table — but the costs are covered either by a lender credit (which raises your interest rate, typically 0.25–0.375%) or by rolling them into the loan balance. It's not actually free; you pay over time through a higher rate or larger balance. No-cost refinances make sense if you plan to sell or refinance again within a few years before the rate premium costs more than the fees would have.