Debt Consolidation Calculator

Consolidating debt looks straightforward on paper: replace several debts with one lower monthly payment. In practice, the calculation is more nuanced. A lower monthly payment is not the same as a lower total cost, and in many cases, consolidation over a longer term costs more in total interest than continuing with existing repayments, even at a lower rate. Understanding the numbers before you commit is essential.

The calculators on this page work through the full picture in order. The debt snapshot tool gives you a clear view of everything you owe, what it costs monthly, and which debts are driving the most interest. The consolidation calculator shows whether combining your debts genuinely saves money overall, or simply reduces your monthly payment at the expense of paying more in total. The DMP comparator sits alongside it for anyone considering a debt management plan as an alternative to a loan. All figures are illustrative. 

Squared Money is an introducer, not a lender. If you choose to enquire, we’ll connect you with a regulated secured finance broker who will assess your circumstances and provide advice. This will not affect your credit score.

If you are struggling with debt and not sure where to start, StepChange (stepchange.org) and National Debtline (nationaldebtline.org) both offer free, impartial advice.

Total Debt Picture Snapshot

Before deciding whether consolidation makes sense, it helps to see everything in one place. When debts are spread across multiple accounts with different balances, rates, and monthly payments, it is easy to lose track of the true picture: what the combined balance is, what percentage of monthly income is going on debt repayments, and which individual debts are generating the most interest cost.

The snapshot tool below takes all your debts as inputs and produces five metrics simultaneously: the composition of your debt by type, your monthly payment burden as a percentage of income, your debt-to-income ratio, a ranking of your debts by APR, and the time to payoff for each individual debt. From those five outputs you can see immediately where to focus, typically the highest-rate debts with significant remaining interest, and whether your overall position is broadly sustainable or under real pressure.

The tool also generates personalised links to the other calculators on this page and across the site, based on your specific debt profile. A borrower with two high-rate credit cards and a manageable payment burden will see different recommendations from one where payments are consuming more than 30% of net income and a DMP may be more appropriate than a loan.

Your total debt picture

Enter everything you owe to see the full picture - composition, cost, payment burden, and where to focus. All figures are based on the information you enter and are illustrative only.

Debt Balance (£) APR (%) Monthly pmt (£) Secured?
Monthly net income
£3,000
Used for affordability ratios only
-

Debt composition

Monthly payment burden

0% 15% 30% 50%+

-

of net monthly income

Debt-to-income ratio

0% 100% 200% 300%+

-

total debt vs annual net income

Highest cost debts by APR

Add debts above

Time to debt free per debt

Add debts above

Tools matched to your debt picture

Add your debts above to see personalised tool suggestions.

Add your debts and income above to generate your debt picture summary.

All figures are based on information you enter and are illustrative only. Remaining interest calculations use standard amortisation and assume fixed payments throughout. Actual figures depend on lender-calculated interest, any fees, and changes to your payment amounts. Debt-to-income and payment burden ratios are indicative guides only - lenders apply their own affordability criteria. If you are struggling with debt, contact a free debt advice service such as StepChange (stepchange.org) or National Debtline (nationaldebtline.org). This tool does not constitute financial advice.

Flexible terms

Consolidation loans from £10,000

Find the best rates 

Debt Consolidation Saving & True Cost Calculator

The central question in any consolidation decision is whether the loan genuinely saves money overall, or whether it trades a lower monthly payment for a higher total cost. These two outcomes are easy to confuse, and the confusion tends to work in favour of the lender rather than the borrower. A consolidation loan at a lower rate over a much longer term can cost significantly more in total interest than continuing to repay existing debts at their current terms.

The calculator below models this honestly. It takes your existing debts, including their current balances, rates, and monthly payments, and calculates the remaining interest on each using standard amortisation. It then compares that total against the interest cost of a consolidation loan at your chosen APR and term. The verdict panel changes colour based on the outcome: green if consolidation saves on both monthly payment and total interest, amber if it reduces the monthly payment but costs more overall, and red if it costs more on both measures.

The amber case is the one most worth understanding before you apply. A consolidation loan that reduces your monthly payment by £200 but costs £3,000 more in total interest is not a saving; it is a cash flow improvement with a long-term cost. The calculator shows the breakeven point: the month at which the cumulative monthly savings offset the extra total interest paid. Beyond that month, the additional interest cost exceeds what you have saved on monthly payments. Before that point, you are worse off in total even if you are better off month to month.

Debt consolidation: saving and true cost calculator

Enter your existing debts and a consolidation loan to see whether you genuinely save money - or just reduce your monthly payment at a higher total cost. All figures are illustrative examples only.

Debt Balance (£) APR (%) Monthly pmt (£) Remaining interest Months left

Consolidation loan

8%
5 years
-

-

-

-

Current debts

Combined monthly payment -
Total remaining interest -
Total still to repay -
Longest remaining term -

Consolidation loan

New monthly payment -
Total interest on loan -
Total repayable -
Term -

Cumulative interest paid - current debts vs consolidation loan

Current debts (combined) Consolidation loan

Remaining interest by debt

Figures are illustrative only. The remaining interest calculation for existing debts assumes payments continue at the amounts entered. Actual remaining interest depends on your lender's calculation method and any fees or charges. The consolidation loan calculation uses standard UK amortisation. Debt consolidation may extend your repayment period and increase total interest paid even if monthly payments fall. Secured consolidation loans put your home at risk if repayments are not maintained. This tool does not constitute financial advice.

For help deciding which of your debts to include in a consolidation, the debt prioritisation tool ranks each debt by how much you stand to save from consolidating it, based on its rate, remaining term, and balance. Including every debt in a consolidation loan is rarely the optimal approach.

Flexible terms

Consolidation loans from £10,000

Find the best rates 

Consolidation vs DMP Comparator

For some borrowers, the right answer is not a consolidation loan but a debt management plan. A DMP involves an adviser negotiating with your creditors to freeze or reduce interest and establish a single affordable monthly payment, distributed to creditors on your behalf. The key difference from a consolidation loan is that a DMP does not involve new borrowing. You repay the debts you already have, typically with reduced or no interest, at a payment level you can actually afford.

The comparator below puts both options side by side. On the DMP side, it models the typical outcome when creditors agree to freeze interest (which is common, though not guaranteed) alongside the worst-case scenario where interest continues to accrue. The comparison covers monthly payment, total interest, time to debt-free, credit file impact, eligibility, and a set of eligibility signals based on your inputs that indicate which route tends to suit your situation.

One signal that is worth particular attention: if the DMP monthly payment is lower than your current combined minimums, that is a strong indicator that a consolidation loan may not be the right tool, because a loan typically requires you to meet the agreed monthly payment without flexibility. A DMP can be adjusted if your income falls, which a loan cannot.

If a DMP is the right route, it should cost you nothing. Free DMP services are available through StepChange (stepchange.org), National Debtline (nationaldebtline.org), Citizens Advice (citizensadvice.org.uk), and MoneyHelper (moneyhelper.org.uk). There is no reason to use a fee-charging DMP company; fees reduce the amount reaching your creditors and extend the time it takes to clear the debt.

Consolidation loan vs Debt Management Plan

Compare the true cost of a consolidation loan against a DMP - and see which tends to suit your situation. This is an illustrative comparison only, not financial advice.

£14,000
£420

Approximate sum of all minimum monthly payments across your debts

19%

Rough average rate across your debts - used to estimate DMP unfrozen cost

I am currently struggling to meet my minimum payments
10%
4 years
£280

What you can realistically afford each month - this goes to your DMP provider to distribute to creditors

Assumes creditors agree to freeze interest - typical but not guaranteed

-

-

-

Consolidation loan

Monthly payment -
Total interest -
Total repayable -
Time to debt free -

DMP

Monthly payment -
Total interest -
Total repayable -
Time to debt free -

These are indicators, not decisions. Both options can be appropriate depending on your full circumstances.

Factor Consolidation loan Debt Management Plan

Always use a free DMP provider

If a DMP is the right route, it should cost you nothing. Free, regulated DMP services are widely available - there is no need to use a fee-charging DMP company. Fees charged by commercial DMP providers reduce the amount reaching your creditors and extend the time it takes to clear your debt.

This tool is for illustrative comparison only and does not constitute financial or debt advice. DMP interest freeze figures assume all creditors agree to freeze interest - this is typical but not guaranteed, and individual creditor decisions vary. Actual DMP outcomes depend on creditor agreements, income and expenditure assessments, and your specific circumstances. Consolidation loan figures use standard amortisation. Both options affect your credit file. If you are struggling with debt, contact a free debt advice service before making any decisions. This tool does not constitute financial advice.

Flexible terms

Consolidation loans from £10,000

Find the best rates 

What is a debt consolidation calculator?

A debt consolidation calculator helps you work out whether replacing multiple debts with a single loan would save you money, and if so, by how much. A good consolidation calculator does more than show you a lower monthly payment: it compares the total interest you would pay across all your existing debts at their current rates and terms against the total interest cost of the proposed consolidation loan, and tells you honestly whether consolidation saves money overall or simply shifts when you pay.

The three calculators on this page cover the full picture. The debt snapshot gives you a clear view of your entire debt position before you make any decisions, identifying which debts are generating the most interest and whether your payment burden is sustainable. The consolidation calculator compares your current debts against a consolidation loan at your chosen rate and term, with a verdict that distinguishes between a genuine saving, a cash flow improvement at a higher total cost, and a situation where consolidation makes neither measure better. The DMP comparator addresses the question that the consolidation calculator cannot: whether a debt management plan, rather than a new loan, would be a better fit for your circumstances.

Debt consolidation is appropriate in some situations and counterproductive in others. It tends to work best when the consolidation rate is meaningfully lower than the blended rate across existing debts, the term is not significantly longer than the existing repayment timeline, and the monthly payment at the new rate is genuinely affordable for the full term. It tends to work less well when the lower rate is offset by a much longer term, when fees on the new loan are high relative to the interest saving, or when the borrower’s financial position means a flexible repayment arrangement is more appropriate than a fixed monthly commitment.

If you are uncertain whether consolidation, a debt management plan, or another route is right for your situation, the free debt advice services listed in the DMP section above are the best starting point. StepChange, National Debtline, Citizens Advice, and MoneyHelper are all regulated, impartial, and free to use. Our guide to what debt consolidation is gives a fuller overview of how consolidation works, the different product types available, and when it tends to make sense.

Debt Consolidation Calculators: Frequently Asked Questions

Questions about how the calculators work and how to interpret the results.

Debt snapshot

What does the total debt picture snapshot show, and should I use it before the consolidation calculator?

The snapshot tool takes all your debts as inputs and produces five outputs simultaneously: how your debt breaks down between secured and unsecured, your monthly payment burden as a percentage of net income, your debt-to-income ratio, your debts ranked by APR, and the estimated time to payoff for each individual debt. The payment burden and debt-to-income gauges use traffic-light colouring to indicate whether your overall position is broadly healthy, stretched, or under significant pressure. The APR ranking is particularly useful: it shows at a glance which debts are generating the most interest, which is the most important input to any consolidation decision.

Running the snapshot before the consolidation calculator is strongly recommended. The snapshot tells you the total remaining interest across all your debts on current terms, which is the baseline the consolidation calculator compares against. Without it, the consolidation calculator requires you to enter each debt individually without the benefit of the summary view. The snapshot also generates tool recommendations based on your specific debt profile, which may point you towards the DMP comparator rather than the consolidation calculator if your payment burden is high relative to your income.

Consolidation calculator

How does the amber verdict state work, and what is the breakeven point telling me?

The amber verdict fires when the consolidation loan reduces your monthly payment compared with your current combined minimums, but costs more in total interest than continuing with your existing debts on their current terms. This is the most common real-world outcome when a lower-rate loan is taken over a significantly longer term: the monthly payment falls, but the extended repayment period means more months of interest accrue in total, even at the lower rate.

The breakeven point is the month at which the cumulative monthly savings from the lower payment overtake the extra total interest cost of the consolidation loan. Before that month, you are worse off in total terms despite paying less each month. After it, the cumulative monthly savings exceed the extra interest cost and the consolidation has, in net terms, been financially worthwhile. If the breakeven point falls in the final months of the loan, the consolidation produces very little net financial benefit even though the monthly payment is lower throughout; the main effect is cash flow improvement rather than genuine saving. Our guide to is debt consolidation right for you covers the scenarios where consolidation typically does and does not make financial sense.

DMP comparator

How does the DMP comparator model the interest freeze, and what happens if creditors do not agree?

The comparator defaults to the interest-frozen scenario, which is the typical outcome when a DMP is established through a reputable provider. Under this model, all creditors agree to stop adding interest from the point the DMP starts, meaning every pound of your monthly payment goes directly to reducing the debt balance. In the frozen scenario, the time to debt-free is simply the total balance divided by the monthly DMP payment, and the total cost equals the current balance with no additional interest.

The worst-case scenario, where interest is not frozen, can be toggled using the button in the DMP inputs section. Under this model, each creditor continues to charge interest at the current rate on their respective balance, and the DMP payment is allocated pro-rata. Whether this scenario applies depends on whether all creditors agree to the freeze, which most do when approached through a recognised free DMP service but which cannot be guaranteed in advance. The comparator shows both scenarios so you can see how much the interest freeze matters to the overall DMP outcome. If a DMP is the right route, StepChange (stepchange.org), National Debtline (nationaldebtline.org), Citizens Advice, and MoneyHelper all provide free DMP services.

Using the calculators

In what order should I use the calculators on this page?

The debt snapshot is the logical starting point for almost everyone, because it gives you the full picture of your debt position and flags immediately whether the payment burden or debt-to-income ratio suggests consolidation is the priority question or whether a DMP should be considered first. From there, the path depends on what the snapshot shows. If payment burden is manageable and the main goal is reducing interest cost, the consolidation calculator is the natural next step. If payment burden is above 25% to 30% of income and current payments are difficult to maintain, the DMP comparator should be run alongside or instead of the consolidation calculator.

If you are unsure which debts to include in a consolidation, the debt prioritisation tool should come before the consolidation calculator, not after. Modelling a consolidation without knowing which debts to include often produces an over-optimistic saving figure that changes significantly when lower-priority debts are removed. The monthly affordability checker is the final step for anyone who has identified a consolidation loan that looks viable: running the proposed payment through a full budget model, including three stress tests, gives a more robust sense of whether the loan is genuinely sustainable before you apply. All figures produced are illustrative and are not a substitute for advice from a free debt advice service or qualified broker.

Debt Consolidation Loan Tools

Consolidation decisions are easy to get wrong, and the tools below are designed to help you see the full picture before you apply. Whether you want to understand your debt position, model whether consolidation genuinely saves money, or compare a loan against a debt management plan, each tool is built to give you an honest view of your options.

Work through your credit history, missed payments, and adverse events to see which lender tier you are likely to fall into, and what that typically means for the rates and products available to you.

Enter a loan amount and term to see how the total cost changes across nine common APR bands, so you can see the financial value of improving your credit profile or securing a lower rate before you apply.

Enter any adverse events on your credit file to see when different lender tiers are likely to become accessible again, and which actions taken now would have the most impact on your timeline.

Enter your existing debts and a proposed consolidation loan to see whether you genuinely save money overall, or whether the lower monthly payment comes at the cost of paying more in total interest.

Rank your debts by how much you stand to save from consolidating each one, select the combination that makes most sense, and see the live impact on total cost before you decide what to include.

Compare the total cost, monthly payment, and practical implications of a consolidation loan against a debt management plan side by side, including the interest freeze scenario that typically applies on a DMP.

Enter your debts and see exactly when you would be debt free on current repayments, then model how much sooner you could get there by paying a fixed amount extra each month or making a one-off lump sum payment.

Enter your income, existing commitments, and a proposed new loan to see whether the repayment is genuinely affordable once everything is included, with three stress tests showing how the picture changes if rates rise or income falls.

Help is on hand

If you’re struggling with your money, help is just a click away 

MoneyHelper is a free service set up by the Government to help people make the most of their money. They offer free and impartial help with your money. 

StepChange is a non-profit organisation that offers free debt advice. If you’re struggling with debt they can help you get back on track. 

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