Debt Consolidation Calculator: Will It Save You Money? (UK and US 2026)

Consolidation Reality Check — Does It Actually Save You Money?

Written by Hamid Ali, MSc Accounting & Finance · Founder of DebtShift · Updated 3 November 2026

Someone consolidated £14,000 of credit card debt into a personal loan at a lower rate. Eighteen months later, she had the same loan — plus £7,000 back on the cards. Nobody warned her that consolidating debt doesn’t make it disappear. It just moves it, and sometimes makes it worse.

This tool gives you a straight yes or no on whether consolidation actually saves you money — with the exact figure, not a guess.

Jump to: Loan vs transfer vs charity plan · Secured vs unsecured · FAQ

What This Tool Actually Does

Enter every existing debt — balance, rate, monthly payment — plus the rate and term of a consolidation loan you’re considering. It calculates the total cost of continuing as you are versus the total cost of consolidating, and gives you a clear answer: yes it saves you money, no it doesn’t, and by exactly how much either way.

\u2713 Free to use. No account, no sign-up and no bank link. You only give an email if you choose to have your result sent to you.

Who This Is For

Anyone juggling multiple high-interest debts who’s been offered a consolidation loan and wants to know if the headline rate is actually a good deal once the full term is accounted for — not just the lower monthly payment, which can hide a longer, more expensive loan underneath.

How to Use This Tool

List every debt you’re considering consolidating — balance, current interest rate, current monthly payment. Then enter the consolidation loan’s rate and term length. The tool runs both scenarios to the end and compares total cost, not just monthly payment, because a lower monthly figure over a longer term can genuinely cost more overall.

The One Test That Actually Matters

For consolidation to be worth it, the total amount you’ll repay — every payment, over the entire term, plus any arrangement fees — has to be less than what you’d pay continuing with your current debts as they are. That’s it. A lower monthly payment isn’t the test. A lower headline rate isn’t the test. Total cost to zero is the only number that matters.

Real numbers make this concrete. Take an £8,000 personal loan at 7.5% APR. Over four years it costs £193.43 a month and £1,284.70 in interest. Stretch the same loan to seven years and the payment drops to £122.71 a month, but the interest rises to £2,307.32. The monthly bill looks kinder, yet you pay about £1,022 more. (Maths run in code using the standard loan formula; your lender’s figures may differ slightly.)

A US example: $5,000 spread across three cards at 23%, 25% and 29% APR, with $170 a month going to the highest rate first, takes 46 months and about $2,664 in interest. A three-year loan at 15% APR would cost $173.33 a month and $1,239.76 in interest. That is roughly $1,425 less, on a similar monthly payment. A loan at 15% is an illustration, not a quote. Your own offer depends on your credit and the lender.

Consolidation Loan, 0% Transfer or Free Charity Plan?

Secured vs Unsecured — The Decision That Changes Everything

An unsecured loan is not tied to your home or other property. A secured loan is, usually your home, so missed repayments could put it at risk. MoneyHelper and the CFPB both warn about this. Putting a home on the line for what used to be unsecured card debt is a real escalation of risk. Also check for early-repayment charges on the debts you are clearing, and for arrangement fees. Speak to a free debt adviser before choosing a secured route just to clear cards.

The Trap Nobody Warns You About

Consolidation only works if you stop using the credit you just cleared. Pay off cards with a consolidation loan and then run them back up, and you end up with the new loan plus fresh card debt on top — genuinely worse off than before you started. This is the single most common way consolidation backfires, and it has nothing to do with interest rates. It’s behavioural, not mathematical, which is exactly why it catches so many people off guard.

When Consolidation Isn’t the Right Move

• Your total debt is small and could realistically clear within a few months of focused budgeting
• You’re already in a formal debt solution — a DMP, IVA, or similar — where taking on new credit usually isn’t appropriate
• You can only qualify at a high rate. If poor credit means your best offer is close to, or above, what you already pay, it will not save you money.
• You’d need to secure the loan against your home and you’re not genuinely comfortable with that risk

Where These Rules and Numbers Come From

Checked October 2026. MoneyHelper: debt consolidation loans (secured v unsecured, total cost, fees). CFPB: should I consolidate my debt? (longer terms cost more, balance transfer fees, home equity risk). FCA Handbook: representative APR (an advertised rate only has to be available under at least 51% of the agreements that result from the ad). The worked examples above were calculated in code with the standard loan payment formula.

If the Payments Are Already Too Much

If you are missing payments or choosing between debts and essentials, a new loan can make things worse. In the UK, free, confidential help is available from StepChange (0800 138 1111) or MoneyHelper. In the US, the NFCC offers non-profit credit counselling. This tool gives general information, not personal financial advice.

Related Tools

If you’re not sure consolidation beats a structured payoff, run both through the AI Debt Payoff Planner first. And if minimum payments on your current debts are part of the problem, the Minimum Payment Trap Calculator shows exactly what they’re costing you right now.

Frequently Asked Questions

Does debt consolidation hurt my credit score?
It can dip temporarily since applying triggers a hard credit check. Making on-time payments on the new loan afterward, and reducing your credit utilisation by clearing card balances, typically helps rebuild your score over the following months.

Can I get a consolidation loan with bad credit?
Yes, but expect a higher rate — the gap between bad-credit and excellent-credit rates can be more than 25 percentage points. Always check whether the offered rate genuinely beats your current debts before signing anything; a bad-credit consolidation loan isn’t automatically better than what you already have.

Is a 0% balance transfer card better than a consolidation loan?
Often yes, for smaller debts you’re confident you can clear before the 0% period ends — usually 12 to 21 months, with a transfer fee around 1.5-3.5% of the amount moved. For larger balances or longer payoff timelines, a fixed-rate consolidation loan usually works out cheaper overall.

Should I use a specialist consolidation company instead of my own bank?
Compare like-for-like. Specialist brokers can search more of the market, but always check for arrangement fees stacked on top of the interest rate — and never pay a fee-charging firm for something a free charity like StepChange or NFCC offers at no cost.