The Debt-Free Date Simulator: See Exactly When You'll Be Free
Feed Claude your real balances and interest rates, and it'll model avalanche vs snowball, pin down your actual debt-free date, and show you the interest you'll save by choosing well.
Debt is heaviest when it's a fog. You know you owe money across a couple of cards and maybe a loan, you're making payments, but you have no real sense of when it ends β or whether the way you're paying it down is costing you thousands more than it needs to. That not-knowing is its own kind of weight.
Here's what makes it worse: the maths that would lift the fog is genuinely fiddly. Comparing repayment strategies means modelling compound interest across multiple balances with different rates, which is not something anyone does in their head on a Tuesday night. So most people just pay a bit off everything and hope, leaving real money and real months on the table.
Claude can run the simulation in seconds. Give it the numbers and it'll show you two proven strategies side by side, tell you the exact month each one gets you to zero, and put a dollar figure on the interest difference. Suddenly the fog has an edge and a date. And a date you can see is a thing you can actually beat.
What You Need
- A free or Pro account at claude.ai β free tier handles the maths fine.
- Your real debt numbers: for each debt, the current balance, the interest rate (APR), and the minimum monthly payment.
- A rough sense of how much you can put toward debt each month in total.
- 15 minutes.
- Recommended: keep this in your "Money" Claude Project so you can update the numbers and watch the date move closer.
- A quick, honest note: this is an educational modelling tool to help you understand your own numbers and options β not personal financial advice. For big decisions (like consolidating or refinancing), it's worth talking to a licensed financial professional.
Step 1: Map every debt in one place
Get it all in front of you. Paste this and fill in your real figures.
You are a clear, encouraging debt-payoff analyst. I want to understand my debts and my options. Here are all my current debts: [For each debt: NAME β current balance β interest rate (APR) β minimum monthly payment.] The total I can realistically put toward debt each month is [AMOUNT]. First, just map it out: 1. Build a clean table of my debts sorted by interest rate, highest first. 2. Show my total debt, my total minimum payments, and how much of my monthly budget is "extra" (above the minimums). 3. Tell me, at minimum payments only, roughly how long each debt would take and how much interest I'd pay β so I can see the cost of doing nothing different. Use my real currency. Be accurate and show your assumptions. Keep the tone matter-of-fact and encouraging, not doom-y.
What just happened: for maybe the first time, every debt is in one view with the real cost of your current path attached. That "here's what minimum payments actually cost you in time and interest" baseline is the number everything else gets measured against β and it's usually the jolt that makes the next step feel urgent in a good way.
Step 2: Simulate avalanche vs snowball
Now the two proven strategies, head to head. Avalanche targets the highest interest rate first (mathematically cheapest); snowball targets the smallest balance first (psychologically motivating). Let Claude model both on your actual numbers.
Now simulate two payoff strategies using my numbers and my [AMOUNT]/month total: STRATEGY A β Avalanche: pay minimums on everything, and throw all extra at the highest-interest debt first, then roll it down. STRATEGY B β Snowball: pay minimums on everything, and throw all extra at the smallest balance first, then roll it down. For each strategy, tell me: 1. The exact month and year I'd be completely debt-free (assume I start this month). 2. The total interest I'd pay along the way. 3. The order I'd clear each debt, with the rough date each one disappears. Then compare them directly: how much sooner and how much cheaper is the avalanche, and what's the trade-off in motivation with the snowball. Give me a plain-English recommendation, but be clear it's my call.
What just happened: the abstract "I should pay more off my debt" just became two concrete timelines with real dates and real interest totals. Seeing "avalanche saves you $X and gets you free three months sooner β but snowball gives you a quick first win" is the exact information you need to choose a strategy you'll actually stick to.
Step 3: Find the levers that move the date
The date isn't fixed β it responds to what you do. Ask Claude to show you which moves matter most.
Using my recommended strategy, show me how my debt-free date and total interest change if I: 1. Add an extra [SMALL AMOUNT, e.g. $50] per month. 2. Add an extra [BIGGER AMOUNT] per month. 3. Make a one-off lump-sum payment of [AMOUNT] (e.g. from a tax refund or bonus). 4. Reduce the interest rate on my most expensive debt by [X]% (e.g. via a balance transfer or asking for a lower rate). For each lever, tell me the new debt-free date and the interest saved versus my base plan. Then rank the levers from biggest impact to smallest, so I know where my effort is best spent. Flag any that come with catches I should check (e.g. balance-transfer fees).
What just happened: you can now see, in dollars and months, exactly what an extra $50 or a lump sum or a lower rate actually buys you. That turns a vague "I should try to pay more" into "adding $50 a month gets me free five months earlier and saves $900" β which is the kind of specific, motivating fact that actually changes behaviour.
Bonus: The progress check-in
Momentum is everything with debt. Set up a monthly ritual that shows the date getting closer.
It's my monthly debt check-in. Here are my updated balances: [LIST]. Compared to last month, show me: how much total debt I've cleared, whether I'm on / ahead of / behind my planned debt-free date, and my new projected date. If I'm behind, help me adjust without shame. Then give me one line of genuine, specific encouragement based on the progress I've actually made.
Payoff: debt payoff is a long game, and the middle is where people quit β because it feels like nothing's happening. Watching your projected free-date creep closer each month turns an invisible slog into visible progress, which is what keeps you going.
Bonus: The windfall optimiser
Unexpected money is a fork in the road. Make the smart call fast.
I've just received an unexpected [AMOUNT] (a bonus, tax refund, gift). Given my debts and rates, show me the mathematically smartest way to use it against my debt β which debt(s) to hit and the exact impact on my debt-free date and total interest. Also flag whether I should hold any of it back for an emergency buffer first, and explain the reasoning so I can make the final call.
Payoff: windfalls tend to either evaporate or get parked without thought. This shows you precisely what putting it toward debt would buy you β so the decision is informed, whether you throw all of it at the balance or keep a little back.
Claude didn't tell you how to feel about your debt or make the choice for you β it ran the compound-interest maths that's genuinely hard to do by hand, so you could choose your strategy with the real numbers in view. You decide how much to pay, which approach fits your temperament, and how to handle a windfall. That's augmentation: it removes the fog and the arithmetic so your judgement has something solid to stand on. This is your climb out β Claude just handed you the map with the finish line marked.
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