You Don’t Have a Debt Problem. You Have a Missing Date.
Written by Hamid Ali, MSc Accounting & Finance, Founder of DebtShift · Updated 3 November 2026 · Payoff rules checked on that date, average-debt statistics last verified 21 October 2026
Nobody panics about the balance. They panic about not knowing when it ends. That gap — the not-knowing — is what keeps people paying minimums for years without ever checking if there’s a faster way out.
The average UK household is carrying about £2,836 on credit cards (July 2026), and a typical card charges about 24.9% APR. In the US the average card balance is $6,610 per borrower (TransUnion, Q2 2026). Neither number moves on its own. It sits there compounding, silently, for every month there is no plan attacking it.
This debt payoff calculator gives you that date in under two minutes. Enter what you owe, on what, at what rate, and what you can actually put toward it each month — it runs the exact amortisation maths lenders use internally, including any extra payments you plan to make, and hands back a real month you’ll be debt-free. Not a guess.
It tests three strategies against your numbers — Avalanche (highest interest rate first, saves the most money overall), Snowball (smallest balance first, gets you a win fastest), and Highest Cost First (puts the extra money on the debt that costs the most interest each year) — then charts which one gets you free soonest and what each one actually costs you in interest. Multiple debts, GBP, USD, or CAD — all handled in one run.
Unlike a debt payoff spreadsheet you have to keep rebuilding by hand, or an app that wants your bank login before it’ll tell you anything, this recalculates the second you change a number — no account, no download, no card details.
The short version. Pay the debts that can cost you your home or your income first (rent or mortgage, council tax, energy). Then, for credit cards and loans, avalanche (highest APR first) costs the least, snowball (smallest balance first) feels the fastest, and the calculator below shows both on your numbers. If your budget does not even cover the minimums, skip the strategy and get free help first.
Not sure what to do first?
Start with your own numbers. It takes about two minutes.
Get My Debt-Free Date →On this page: the planner · what to pay first · avalanche vs snowball · if you cannot afford the minimums · questions
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Enter your debts. Get your exact debt-free date and a step-by-step plan to get there faster.
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| Strategy | Debt-Free Date | Total Interest | Months |
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| Month | Payment | Interest | Principal | Remaining |
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Before you pick a strategy: pay these first
Avalanche and snowball are for ordinary unsecured debts like credit cards, store cards, overdrafts and loans. They are the wrong tool if you are behind on something that can cost you your home, your power or your wages. Free advisers call those priority debts because the consequences of not paying them are the most serious:
- Mortgage or rent
- Council tax, gas and electricity
- Court fines, child maintenance and money owed to HMRC
Keep those current, then put what is left into the planner. If you are in the UK and you are not sure which of your debts are priority, a free adviser at StepChange or National Debtline will sort them in one call. For what happens when an unsecured debt goes unpaid, read what happens if you stop paying.
Avalanche, snowball or highest cost first?
| Method | Extra money goes to | Best for | Trade-off |
|---|---|---|---|
| Avalanche | The highest APR first | Saving the most interest | The first win can take a while |
| Snowball | The smallest balance first | Staying motivated with quick wins | Usually costs more interest |
| Highest cost first | The debt costing the most interest each month (balance × rate) | Large balances at middling rates | Sits between the other two |
Here is what the difference looks like on a real pair of cards. £2,000 at 29.9% (minimum £60) and £800 at 12% (minimum £30), with £250 a month to spend: avalanche clears both in 13 months for £378.15 in interest; snowball takes 14 months and £481.22. That is about £103 and a month, which is real money but not life-changing, so if snowball keeps you paying every month, it is a perfectly good choice.
Want the longer guide?
Our step-by-step guide covers listing every debt, choosing a method and building the budget.
Read the Step-by-Step Guide →If your budget does not cover the minimums
No payoff strategy works if the money is not there. If the tool tells you your budget is short, or your debt never clears (£5,000 at 30% costs about £125 in interest every month), these are the routes to ask about, all free through a charity:
- Breathing Space (England and Wales): up to 60 days with no enforcement action, no creditor contact about the included debts and no added interest or charges. You apply through a debt adviser (GOV.UK).
- Debt management plan: one affordable monthly payment shared between creditors, arranged with a charity such as StepChange.
- Debt Relief Order or bankruptcy: for people with very little spare income. Check with the bankruptcy and DRO checker.
- US: an NFCC member agency can review your budget and set up a debt management plan; call 877-360-6322.
And if you want to see how the interest on a card builds when you pay little, run it through the minimum payment trap calculator. If a collector is already chasing you, check your rights first.
What Your Results Actually Mean
Your debt-free date isn’t a prediction — it’s arithmetic. The calculator runs standard amortisation, the same maths banks use internally, against the exact numbers you entered. Change your real minimum payments, your APR, or an extra payment plan, and the date moves with you. It’s only ever as accurate as what you put in.
Two moves make the biggest difference from here. First, try the What If simulator above — even £50 or $50 extra a month can strip years off a high-APR balance. Second, if your result shows minimum payments are barely denting the total, take that seriously: our Minimum Payment Trap Calculator breaks down exactly how much of every payment is going to interest versus your actual balance.
If you’re in the UK and this plan still shows years of repayment ahead on unmanageable balances, an IVA or the government’s Breathing Space scheme could change the maths entirely — read what an IVA actually involves, how Breathing Space works, or check the DRO eligibility checker if your total debt is under £50,000. In the US, if the numbers don’t work even with a tighter budget, look at what a negotiated settlement could realistically save you with the Debt Settlement Calculator before assuming bankruptcy is the only door left.
Paying off debt also moves your credit score — usually upward, once your utilisation drops. See how with the AI Credit Score Roadmap. For the wider strategy, start with the US debt payoff hub or the step-by-step payoff plan guide if you’re UK-based.
Written By
Hamid Ali — MSc Accounting & Finance (University of Northampton), Founder of DebtShift. Hamid built DebtShift’s tools using standard amortisation and industry-standard credit scoring methodology, verified against current Bank of England, Federal Reserve, and credit bureau data.
⚠️ Struggling right now — not just planning ahead?
UK: DebtShift is not regulated by the FCA and this tool is not financial advice. For free, confidential debt help contact StepChange or Citizens Advice.
US: DebtShift is not a licensed financial advisor. For free debt support contact the NFCC at (877) 360-6322.
Sources, rules and worked examples (checked 21 October 2026)
The figures above. UK: £2,836 average credit card debt per household in July 2026 and a 24.9% median representative APR on balance transfer and purchase cards, from MoneySuperMarket’s credit card statistics (the debt figure draws on Bank of England lending data). US: $6,610 average card debt per borrower, TransUnion Q2 2026 Credit Industry Insights Report, released 6 August 2026.
How the calculator works. Each month it adds interest (APR divided by 12) to each balance, pays every card its minimum, then puts all the rest of your budget on the priority card. When a card is cleared, its minimum rolls onto the next one. Avalanche puts extra money on the highest APR first. Snowball starts with the smallest balance. Highest Cost First starts with the debt that costs the most interest per year. It is rule-based, not artificial intelligence, and it is an estimate, not advice.
If your payments cannot keep up. If the interest each month is as large as your payments, the debt never clears and the calculator will tell you so. In that case free advice comes before any plan: UK, StepChange on 0800 138 1111; US, NFCC at nfcc.org.
Four worked examples (our own illustrations, maths run in code)
Example 1: one card, minimum only. £3,000 at 24.9% APR with a £90 payment takes 58 months and costs £2,156.17 in interest.
Example 2: the same card, more each month. Pay £150 a month and it clears in 27 months for £915.95 interest. Pay £200 and it takes 19 months for £631.43. An extra £60 a month saves about £1,240 in interest and 31 months.
Example 3: avalanche or snowball. Two cards: £2,000 at 29.9% (minimum £60) and £800 at 12% (minimum £30), with a £250 budget. Avalanche clears both in 13 months for £378.15 of interest. Snowball takes 14 months and £481.22, because it clears the cheap card first while the expensive one keeps growing. Snowball can still help if small wins keep you going, but the cost is real.
Example 4: payments that cannot win. £5,000 at 30% APR costs about £125 in interest every month. A £50 payment cannot keep up, so the balance grows. That is the point to speak to a free adviser. See our minimum payment trap calculator and UK debt help guide for what comes next.
Questions People Actually Ask About This
Is this debt payoff calculator actually free?
Yes — no account, no card details, no cap on how many times you run it. Change your budget, add a debt, test a strategy, rerun it as many times as you want. There’s no premium tier hiding behind it.
How accurate is the debt-free date this gives me?
As accurate as what you enter. It runs the same amortisation formula lenders use internally — balance minus payment plus interest, month by month, until it hits zero — assuming your APR, minimum payments, and monthly budget stay constant. If your real rate changes or a month gets tight, rerun the numbers and the date updates with them.
Can I save my numbers and come back to them later, like a tracker?
Not right now — every run is free and unlimited, but nothing is stored on our end once you close the tab. If you want a record, screenshot your results or copy the numbers into a note. We’d rather tell you that upfront than have a spreadsheet-style “tracker” claim that isn’t true.
What’s the difference between the Avalanche and Snowball method?
Avalanche throws every spare pound or dollar at your highest-APR debt first, regardless of size — mathematically it always saves you the most in total interest. Snowball ignores the interest rate and clears your smallest balance first, so you finish a debt completely sooner — for a lot of people that’s the difference between sticking with a plan and giving up on it. Neither is wrong. The comparison table above shows the actual difference for your specific debts.
Will using this tool affect my credit score?
No — it’s a calculator, not a credit application, so it never touches your credit file and involves no search, hard or soft. What it does show is how paying down balances is likely to move your score over time, since credit utilisation — how much of your available credit you’re using — is one of the biggest factors most scoring models weigh.
What if I can’t even afford my minimum payments right now?
If your monthly budget doesn’t cover your total minimums, this calculator flags it rather than handing you a false date. That’s a sign the calculator alone isn’t enough — read what actually happens if you stop paying and know your rights before creditors or collectors get involved. Then talk to a free debt charity directly — StepChange in the UK, the NFCC in the US — rather than relying on a calculator alone.
What’s Highest Cost First, and how is it different from Avalanche or Snowball?
Highest Cost First ranks your debts by monthly interest cost — balance multiplied by rate — rather than pure APR or pure balance. In practice it usually lands between Avalanche and Snowball: it goes after whichever debt is bleeding you the most money right now, which is sometimes a mid-sized balance at a brutal rate rather than your single highest APR card. It’s a reasonable default if you’re not sure which of the other two suits you.
Does this tool report anything to my bank, lender, or credit file?
No. Nothing you enter is shared with any bank, lender, or credit reference agency — it stays in your browser for this session and isn’t saved anywhere afterward.
Can I use this if my debts are in more than one currency?
The tool calculates in one currency at a time — switch using the GBP, USD, or CAD buttons at the top. If your debts genuinely span currencies, run the calculation once per currency group and add the results together manually, since exchange rates fluctuate and this doesn’t convert between them.
Ready to put the plan into action?
Run your numbers again with your real budget and share the date with someone you trust.
Back to the Planner →More help: UK debt help guide · how to pay off debt · US debt relief guide · see our full disclaimer.