--- title: "Mortgage Refinancing Calculator | Numequo" description: "Compare your current mortgage with a refinancing offer, including interest, insurance and fees, to estimate net savings." canonical: "https://www.numequo.com/finance/loans/mortgage-refinancing-calculator/" locale: "en" --- [Numequo](https://www.numequo.com/) › [Finance](https://www.numequo.com/finance/) › [Loans and credit](https://www.numequo.com/finance/loans/) # Mortgage Refinancing Calculator Enter the remaining terms of your mortgage and the proposed new terms to see whether refinancing could reduce your remaining borrowing cost. ## Input data - **Remaining principal** - type: number; default: 180000; min: 0.01; max: 1000000000; step: 100 - **Current annual rate (%)** - type: number; default: 4.2; min: 0; max: 100; step: 0.01 - **Remaining term (months)** - type: number; default: 216; min: 1; max: 1200; step: 1 - **Current monthly insurance** - type: number; default: 45; min: 0; max: 100000; step: 0.01 - **Proposed annual rate (%)** - type: number; default: 3.2; min: 0; max: 100; step: 0.01 - **New term (months)** - type: number; default: 216; min: 1; max: 1200; step: 1 - **New monthly insurance** - type: number; default: 35; min: 0; max: 100000; step: 0.01 - **Total refinancing fees** - type: number; default: 4500; min: 0; max: 100000000; step: 100; Include application, guarantee, brokerage and any early-repayment costs. - **Currency** - type: choice; default: EUR; options: Euro (€), US dollar ($), Pound sterling (£), Canadian dollar (C$), Swiss franc (CHF) ## How it works Net savings = current remaining interest and insurance − new interest, insurance and refinancing fees. Monthly payments use the standard fixed-rate amortization formula. ## Quick examples - **4.2% → 3.2% over 18 years** - Remaining principal: 180000, Current annual rate (%): 4.2, Remaining term (months): 216, Current monthly insurance: 45, Proposed annual rate (%): 3.2, New term (months): 216, New monthly insurance: 35, Total refinancing fees: 4500, Currency: EUR - **Small rate difference** - Remaining principal: 120000, Current annual rate (%): 3.5, Remaining term (months): 144, Current monthly insurance: 30, Proposed annual rate (%): 3.1, New term (months): 144, New monthly insurance: 30, Total refinancing fees: 4000, Currency: EUR - **Lower payment over a longer term** - Remaining principal: 240000, Current annual rate (%): 4.8, Remaining term (months): 180, Current monthly insurance: 60, Proposed annual rate (%): 3.7, New term (months): 240, New monthly insurance: 50, Total refinancing fees: 6500, Currency: EUR ## Understanding your result A positive saving means the new offer has a lower estimated remaining cost after fees. This does not guarantee lender approval: compare the official APR, schedule and contract before deciding. Last verified: 29 September 2026 (2026-09-29) ## Frequently asked questions ### How do I know whether refinancing is worthwhile? Compare the interest and insurance still payable on your current mortgage with the interest, insurance and fees of the new offer. This calculator performs that like-for-like cost comparison. ### Which refinancing fees should I include? Add application, guarantee, brokerage and mortgage-discharge fees, plus any early-repayment charge requested by the current lender. ### Is a one-point rate reduction always enough? No. The remaining balance, term, insurance and fees determine the actual saving. A smaller reduction can be worthwhile on a large, recent mortgage, while a larger reduction may not offset high fees near the end. ### What is the difference between renegotiation and refinancing? Renegotiation changes the terms with your current lender. Refinancing or a loan buyback replaces the mortgage through another lender and usually involves additional guarantee and early-repayment costs. ### Does a positive result mean my lender must accept? No. The result estimates financial value only. Approval, the final rate, insurance and fees depend on the lender, your application and the contractual offer. ## Related calculators - [Loan Comparison Calculator](https://www.numequo.com/finance/loans/loan-comparison-calculator/) - Compare two fixed-rate loans by monthly payment, fees, insurance and total cost. - [Early Loan Repayment Calculator](https://www.numequo.com/finance/loans/early-loan-repayment-calculator/) - Estimate the time and interest saved with a lump sum or additional monthly payments. - [Debt-to-Income Ratio Calculator](https://www.numequo.com/finance/loans/debt-to-income-ratio-calculator/) - Calculate your household debt-to-income ratio, total monthly debt payments and remaining income after debt. - [Loan Calculator](https://www.numequo.com/finance/loans/loan-calculator/) - Estimate monthly payments and total loan cost. - [Compound Interest Calculator](https://www.numequo.com/finance/savings-investing/compound-interest-calculator/) - See how savings may grow with monthly compounding. - [VAT Calculator](https://www.numequo.com/finance/taxes-pricing/vat-calculator/) - Add VAT to a net price or extract it from a gross price. ## Structured data ```json { "@context": "https://schema.org", "@graph": [ { "@type": "WebPage", "@id": "https://www.numequo.com/finance/loans/mortgage-refinancing-calculator/#page", "name": "Mortgage Refinancing Calculator | Numequo", "description": "Compare your current mortgage with a refinancing offer, including interest, insurance and fees, to estimate net savings.", "url": "https://www.numequo.com/finance/loans/mortgage-refinancing-calculator/", "inLanguage": "en", "isPartOf": { "@type": "WebSite", "name": "Numequo", "url": "https://www.numequo.com/" } }, { "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Numequo", "item": "https://www.numequo.com/" }, { "@type": "ListItem", "position": 2, "name": "Finance", "item": "https://www.numequo.com/finance/" }, { "@type": "ListItem", "position": 3, "name": "Loans and credit", "item": "https://www.numequo.com/finance/loans/" }, { "@type": "ListItem", "position": 4, "name": "Mortgage Refinancing Calculator", "item": "https://www.numequo.com/finance/loans/mortgage-refinancing-calculator/" } ] }, { "@type": "WebApplication", "name": "Mortgage Refinancing Calculator", "description": "Compare your current mortgage with a refinancing offer, including interest, insurance and fees, to estimate net savings.", "url": "https://www.numequo.com/finance/loans/mortgage-refinancing-calculator/", "applicationCategory": "UtilitiesApplication", "operatingSystem": "Any", "offers": { "@type": "Offer", "price": "0", "priceCurrency": "EUR" } }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How do I know whether refinancing is worthwhile?", "acceptedAnswer": { "@type": "Answer", "text": "Compare the interest and insurance still payable on your current mortgage with the interest, insurance and fees of the new offer. This calculator performs that like-for-like cost comparison." } }, { "@type": "Question", "name": "Which refinancing fees should I include?", "acceptedAnswer": { "@type": "Answer", "text": "Add application, guarantee, brokerage and mortgage-discharge fees, plus any early-repayment charge requested by the current lender." } }, { "@type": "Question", "name": "Is a one-point rate reduction always enough?", "acceptedAnswer": { "@type": "Answer", "text": "No. The remaining balance, term, insurance and fees determine the actual saving. A smaller reduction can be worthwhile on a large, recent mortgage, while a larger reduction may not offset high fees near the end." } }, { "@type": "Question", "name": "What is the difference between renegotiation and refinancing?", "acceptedAnswer": { "@type": "Answer", "text": "Renegotiation changes the terms with your current lender. Refinancing or a loan buyback replaces the mortgage through another lender and usually involves additional guarantee and early-repayment costs." } }, { "@type": "Question", "name": "Does a positive result mean my lender must accept?", "acceptedAnswer": { "@type": "Answer", "text": "No. The result estimates financial value only. Approval, the final rate, insurance and fees depend on the lender, your application and the contractual offer." } } ] } ] } ```