Refinance Settlement Costs and Monthly Payment Calculator

This refinance calculator estimates the monthly payment and total interest on a new, fixed-rate loan from its amount, APR, and term. Enter the proposed loan figures to see the scheduled payment and interest; settlement charges and other costs are not included in those outputs.

Formula

The calculator uses the standard level-payment formula for a loan with monthly payments and a fixed APR. Monthly payment = P × r ÷ [1 − (1 + r)⁻ⁿ], where r = APR ÷ 1,200 and n = term in years × 12. Total interest = monthly payment × n − P.

• P is the new loan principal, in dollars.
• APR is the annual percentage rate entered as a percentage, such as 8 for 8%.
• r is the monthly interest rate as a decimal.
• n is the number of monthly payments.

The formula assumes the displayed payment is made each month. The interest total uses that payment rounded to cents, as a real payment amount is normally stated in cents. This is a loan-payment estimate, not a full refinance settlement statement.

Worked Example

Using the calculator’s default values—loan amount $20,000, APR 8%, and term 5 years:

1. Convert the APR to a monthly decimal rate: 8 ÷ 1,200 = 0.0066667.
2. Convert the term to payments: 5 × 12 = 60 months.
3. Apply the payment formula: $20,000 × 0.0066667 ÷ [1 − (1.0066667)⁻⁶⁰] ≈ $405.53 per month.
4. Calculate interest using the rounded payment: $405.53 × 60 − $20,000 = $4,331.80.

Assumptions

• The interest rate is fixed for the entire modeled term.
• Payments are equal, made monthly, and treated as end-of-period payments.
• Interest accrues monthly at APR divided by 12.
• The calculation excludes settlement charges, lender fees, taxes, insurance, mortgage insurance, escrow, and any prepaid or accrued interest.

What Refinance Settlement Means

Refinancing replaces an existing loan with a new one. Settlement is the process of completing that replacement: the new loan documents are finalized, funds are applied as directed, the prior loan is paid off, and any required charges or adjustments are reconciled. The precise participants and paperwork depend on the loan type, transaction, and applicable rules, so there is no single universal checklist.

For a home mortgage, settlement commonly involves a lender, a settlement or closing agent, and the borrower; other parties may be involved depending on the transaction. For an auto, student, or personal loan, the process may be handled directly between the borrower and the new and existing servicers, with different documentation and payoff procedures. A refinance calculator cannot determine those procedural requirements or produce a binding payoff figure.

Typical Settlement Process

Although details vary, a refinance often follows these stages:

1. Submit information and apply. The lender requests details needed to assess the application and prepare proposed terms. Application requirements are lender- and product-specific; obtain the current list directly from the lender.
2. Review the proposed transaction. Compare the proposed principal, APR, term, payment schedule, and itemized charges with the existing loan and any written disclosures. Check whether costs are paid upfront or included in the new balance.
3. Obtain an accurate payoff amount. The old lender or servicer provides a payoff figure for a specified date. It can differ from the balance shown on a recent statement because interest may accrue between statement date and payoff, and other account-specific amounts may apply.
4. Complete required checks and documents. The parties may verify identity, income, assets, collateral, title, or other information as relevant. The exact checks and documents depend on the loan and jurisdiction; ask the responsible parties what remains outstanding.
5. Sign and fund. Once required conditions are met, final documents are signed and the new loan funds according to the closing instructions. Carefully review the final figures before signing, and ask about any discrepancy.
6. Confirm the old loan is paid. Verify with the former servicer that the payoff posted and ask whether any remaining amount, refund, or account action is pending. Keep closing records and continue following the existing payment instructions until the old servicer confirms otherwise.

Costs, Payoff, and the New Balance

Settlement figures may include charges for services, administrative items, prepaid expenses, or adjustments, depending on the transaction. The names, amount, and responsibility for each item should appear in the applicable written estimate or final disclosure. Do not assume that “no-cost” means there are no costs: a transaction may handle charges through a different rate, a credit, or an added balance. Ask the lender to explain how each item is treated.

A useful comparison separates the new loan principal from the amount you receive or use to pay other obligations. For example, if the old payoff is $18,000 and eligible costs are added to a new $20,000 loan, the payment calculator uses $20,000 as principal. It does not show how much cash, if any, reaches the borrower, nor whether those charges are financed. Enter the actual proposed principal—not merely the old statement balance—to estimate the payment.

Also distinguish monthly payment from total borrowing cost. A longer term can reduce the scheduled payment while extending the time interest accrues. The calculator’s total interest covers only the modeled principal, APR, and term; it does not account for settlement charges, changes in payment timing, or an existing loan’s remaining cost. For a meaningful comparison, obtain written figures for both transactions and compare the same time horizon and included costs.

Common Delays and Checks Before Signing

Missing documents, mismatched account details, an outdated payoff quote, unresolved title or collateral issues, and changes to the proposed terms can delay settlement. A payoff quote may also expire, so confirm its valid-through date and how the lender handles a funding delay. If the amount sent to the old servicer is short or excess, ask the servicers how the difference will be handled rather than assuming it is automatically corrected.

• Confirm the new principal, APR, term, payment amount, and first-payment date against the final documents.
• Check that the payoff is directed to the correct account and is valid for the anticipated funding date.
• Ask which charges are paid at settlement and which, if any, are included in the balance.
• Keep copies of the signed documents, payoff confirmation, and final settlement statement or equivalent record.
• Do not stop payments on the existing loan solely because a refinance is pending; confirm payoff and payment instructions with the servicer.

Frequently Asked Questions

What does refinance settlement mean?
It is the completion of replacing an existing loan with a new one, including signing required documents, applying funds to the old loan, and reconciling the transaction’s charges and adjustments.

What documents are required for a refinance settlement?
There is no universal list. Requirements depend on the loan, lender, collateral, and transaction. Ask the lender or settlement agent for the current checklist and confirm which items must be delivered before funding.

Does the calculator include refinance closing costs?
No. It estimates principal-and-interest payments and the interest total from the entered amount, APR, and term. Use written settlement figures to account for fees, prepaid items, credits, or charges added to the loan.

Why can the payoff amount differ from my loan balance?
A statement balance may be dated earlier than the planned payoff. The payoff figure can reflect interest through a specified date and other account-specific adjustments. Request a current payoff statement from the existing servicer.

Should I keep paying the old loan while refinancing?
Follow the existing servicer’s payment instructions until it confirms the loan is paid and explains whether another payment is due. A refinance application or scheduled closing does not itself confirm that funds have reached the old account.

This calculation is an educational estimate; the lender’s final disclosure and payoff figures provide the transaction-specific amounts.

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in p | Loan amount | $ | 20000 | 1 | 100000000
in apr | Interest rate (APR) | % | 8 | 0.01 | 100
in yrs | Loan term | years | 5 | 0.0833 | 50
out pmt | Monthly payment | $ | p * (apr / 1200) / (1 - (1 + apr / 1200) ^ -(yrs * 12)) | 2
out int | Total interest | $ | pmt * yrs * 12 - p | 2