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Debt Consolidation Calculator

Juggling credit cards, loans and high-interest repayments? If you’re a homeowner, you may be able to consolidate your debts into your mortgage and reduce your monthly outgoings significantly.

Use our Debt Consolidation Calculator to compare what you’re paying now vs what a mortgage-based solution could look like. Get instant clarity, then speak to Mortgage Knight for expert advice on whether it’s the right move for you.

Debt Consolidation Calculator - Cut Your Monthly Payments

Debt Consolidation Calculator

See if you can cut your monthly payments by consolidating into your mortgage

Current Debts

Current Mortgage Details

Proposed New Mortgage

Comparison Results

Current Situation
After Consolidation
Important: This calculator provides estimates only. Actual rates, fees, and terms depend on individual circumstances and lender criteria. Consolidating debts into your mortgage increases the total amount owed and may increase the total interest paid over the mortgage term. Consider the long-term cost implications. Always seek professional financial advice before making debt consolidation decisions.

What This Calculator Helps You Estimate

  • Total monthly repayments on current debts
  • What those debts could cost if added to your mortgage
  • Monthly saving (or increase) by consolidating
  • Potential interest differences over the full term

How It Works

  • You’ll be asked to input:

1. Total outstanding balances on:

  • Credit cards
  • Personal loans
  • Car finance
  • Other unsecured borrowing

2. Your current mortgage balance, rate, and term

3. Proposed new mortgage rate and term (e.g. remortgage with additional borrowing)

  • The calculator will estimate:
  • Your combined monthly payment if you consolidate
  • Monthly difference (saving or extra cost)
  • Total interest paid before and after consolidation

When Debt Consolidation Can Make Sense

  • You’re paying high interest on credit cards or loans
  • Your debts feel unmanageable or scattered
  • You want one simple monthly payment
  • You’re coming to the end of a fixed mortgage deal
  • You have spare equity in your property

Important Considerations

  • Rolling short-term debts into a long-term mortgage could mean paying more interest overall
  • Your home is at risk if you fail to keep up repayments
  • It’s not right for everyone, but can be a powerful reset for some
  • We’ll help you weigh the cost vs benefit, and structure the deal to suit your goals — whether it’s reducing payments, clearing balances faster, or improving affordability.

Example Scenario

Adam and Zoe had:

  • £10,000 on credit cards
  • £8,000 on a personal loan
  • £7,000 in car finance
  • Paying £740/month across all debts

They had £65,000 equity in their home. By consolidating £25,000 of debt into their remortgage at 4.75% over 20 years, their new monthly cost was £163/month — saving £577/month, with a plan to overpay and clear it early.

Capital Raising

Dan and Priya want to borrow an extra £20,000 for home improvements. The calculator shows how that affects their monthly payment and total interest, so they can budget with confidence.

Comparing Fees

Ellie is looking at two new mortgage deals — one with a fee, one without. Using the calculator, she sees that even with a £999 fee, the lower interest rate saves her money within 18 months.

FAQs

A: Yes — it compares your current repayments vs the new mortgage-based repayment. But we also recommend looking at the total interest paid, which the tool can estimate.

A: Ideally, you pay over the shortest term you can afford. We can structure the debt over a shorter period within the mortgage, or even keep it on a sub-account with a fixed end date.

A: Using the calculator won’t. Applying for a new mortgage or closing credit accounts may affect your score temporarily, but consolidating and paying off debts can help long-term.

A: No, lenders generally won’t allow personal debts on BTL borrowing. But if you live in the property (residential mortgage), consolidation is often allowed.

A: It depends. If you’re locked into a fixed rate, a second charge might be cheaper. We’ll compare all options for you.

Ready to Restructure Your Finances? Let’s See What’s Possible

Use our free Debt Consolidation Calculator now to explore your options — then talk to Mortgage Knight for expert advice and access to lenders who’ll say yes to your plan.

Smart finance. Real savings. No judgement.

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