Refinance Rates Los Angeles: 15-Year Payment Calculator

This calculator estimates the monthly principal-and-interest payment and total interest for a 15-year refinance loan using the loan amount and annual interest rate you enter. It does not provide a live Los Angeles rate quote; enter a rate from a lender’s current written estimate to see the payment arithmetic.

Formula

The calculator uses the standard fixed-payment loan formula. Monthly payment = P × r ÷ [1 − (1 + r)⁻ⁿ], where P is the new loan amount in dollars, r is the monthly interest rate as a decimal (annual APR ÷ 12 ÷ 100), and n is the number of monthly payments (years × 12). The payment is rounded to cents. Total interest is the rounded monthly payment multiplied by the number of payments, minus the original loan amount.

The 15-year term means 180 scheduled monthly payments. Although the page focuses on a 15-year refinance, the term field can be changed to compare other terms; enter years, not months. APR is entered as a percentage, so 6.5 means 6.5%, not 0.065.

Worked Example

Using the calculator’s defaults: a $500,000 new loan, 6.5% annual APR, and 15 years.

1. Monthly rate: 6.5 ÷ 1,200 = 0.0054166667.
2. Payment count: 15 × 12 = 180.
3. Monthly payment: $500,000 × 0.0054166667 ÷ [1 − (1 + 0.0054166667)⁻¹⁸⁰] = $4,355.60 after cent rounding.
4. Total scheduled payments: $4,355.60 × 180 = $784,008.00.
5. Estimated total interest: $784,008.00 − $500,000 = $284,008.00.

Assumptions

• The interest rate is fixed for the full modeled term.
• Payments are level, made monthly, and begin on the schedule assumed by the standard amortization formula.
• Interest compounds monthly at APR divided by 12.
• The estimate covers principal and interest only. It excludes lender fees, closing costs, taxes, insurance, mortgage insurance, escrow, and any changes in the loan balance or payment schedule.

What a 15-Year Refinance Rate Means in Los Angeles

A refinance replaces an existing mortgage with a new loan. The new loan’s rate is not a single citywide figure: a lender’s offer depends on the specific loan and borrower details, and advertised rates may rely on assumptions that do not match an individual application. This page therefore does not claim to show today’s Los Angeles rate. For a usable estimate, obtain a quote for the same loan type, term, rate structure, and points or fees, then enter the quoted APR here.

A 15-year term generally schedules repayment over a shorter period than a 30-year term. With the same loan amount and interest rate, the shorter term produces a higher monthly principal-and-interest payment, but fewer payment months. The total interest shown is an arithmetic projection under the entered assumptions, not a guaranteed saving compared with an existing mortgage.

How to Compare Refinance Offers

Compare written estimates on matching terms rather than relying only on a prominent advertised rate. Check whether the quoted interest rate is fixed or adjustable, whether points or other upfront charges apply, and what APR and loan amount the quote uses. APR is intended to reflect certain borrowing costs as a yearly rate, but the calculator uses the APR as its rate input for a simplified payment estimate. A lender’s official payment schedule can differ because of fee treatment, rounding, timing, or loan structure.

• Enter the proposed new loan amount, including any amount being added to the balance if applicable.
• Use the quoted annual APR in percent and select the matching term in years.
• Compare the resulting principal-and-interest payment with the full payment figures in the lender’s documents; escrowed items and insurance are not calculated here.
• Review upfront costs separately. This calculator does not determine how long it would take for any payment difference to offset those costs.

Costs, Break-Even, and Common Misconceptions

A lower payment by itself does not establish that refinancing reduces the overall cost. For example, extending the repayment period can lower a scheduled monthly payment while increasing the number of months interest accrues. Conversely, a shorter term can raise the monthly payment even if the total interest projection is lower. A fair comparison needs the remaining balance and term on the current loan, the proposed loan’s full costs, and the time the borrower expects to keep the loan.

One common misconception is that “15-year refinance rate” names a rate available to every Los Angeles homeowner. It does not: the calculator needs the actual rate offered for the specific transaction. Another is that the total-interest output includes every cost of refinancing. It includes only modeled interest based on the entered APR and rounded payment; it does not add fees or estimate taxes, insurance, or other housing expenses.

To estimate a simple break-even period outside this calculator, a borrower would need a reliable estimate of upfront refinance costs and the monthly savings measured against the existing loan on a comparable basis. Dividing costs by monthly savings can give a rough number of months only when savings are positive and reasonably consistent. It is not a complete cost comparison, especially if the new term or balance differs.

Frequently Asked Questions

What are refinance rates in Los Angeles for a 15-year mortgage?
There is no single rate that applies to every borrower or loan. Request a current written quote for your specific situation; this calculator does not retrieve live market rates.

How much is the payment on a 15-year refinance?
It depends on the new loan amount and the annual rate. Enter both figures above to estimate monthly principal and interest; the default example returns $4,355.60 on $500,000 at 6.5% APR.

Does the calculator include closing costs?
No. It estimates payments and interest from the amount, APR, and term only. Use the lender’s written estimate for fees and other transaction costs.

Is a 15-year refinance payment always lower than a 30-year payment?
No. For the same balance and rate, a 15-year schedule usually requires a larger monthly principal-and-interest payment because it repays the balance in fewer months. Actual offers may use different rates or loan amounts.

Does this show the current Los Angeles mortgage rate?
No. The rate is an input, not a live quote. Enter the APR provided by a lender and confirm the exact payment and costs in its disclosure.

This result is an estimate for educational use, and the lender’s disclosure gives the exact figures.

Related

• How Much Is a Refinance? Estimate the Costs
• How Much Does Refinance Cost? Calculate the New Payment
• Debt Service Ratio: Formula and Worked Example

in p | New loan amount | $ | 500000 | 1 | 100000000
in apr | Interest rate (APR) | % | 6.5 | 0.01 | 100
in yrs | Loan term | years | 15 | 0.0833 | 50
out pmt | Monthly principal-and-interest payment | $ | round(p * (apr / 1200) / (1 - (1 + apr / 1200) ^ -(yrs * 12)), 2) | 2
out int | Total interest | $ | pmt * yrs * 12 - p | 2