Question 1

What is the avalanche method?

Accepted Answer

The debt avalanche puts every spare dollar above the minimums toward whichever card carries the highest APR, while paying just the minimum on every other card. Once the highest-rate card is cleared, its former payment rolls onto the next-highest-rate card, and so on. It's the mathematically optimal order for minimizing total interest paid, though it can feel slow at first if your highest-rate card also has the largest balance.

Question 2

What is the snowball method?

Accepted Answer

The debt snowball targets the smallest balance first regardless of its interest rate, again paying only minimums elsewhere. Clearing a full card quickly delivers an early psychological win, and that freed-up minimum payment then snowballs onto the next-smallest balance. It typically costs a bit more in total interest than avalanche, but the momentum and visible progress help many people actually stick with the plan.

Question 3

How much can I save by paying more than the minimum?

Accepted Answer

Often thousands of dollars and years of debt, especially across several high-APR cards. Minimum payments are calculated to keep a balance outstanding for as long as possible while maximizing the card issuer's interest income — even a modest increase in your total monthly budget, allocated strategically via avalanche or snowball, compounds into dramatic savings. Compare the four strategy cards above using your own balances to see the exact dollar difference.

Question 4

How is credit card interest calculated?

Accepted Answer

Card issuers compound interest daily off your average daily balance: your APR is divided by 365 (or 360, depending on the issuer) to get a daily rate, which is applied to the balance each day and added to what you owe. For simplicity this calculator models it as a standard monthly-compounding installment payoff, which is very close to the real daily-compounding result for typical balances and payment patterns.

Question 5

Should I pay off debt or invest?

Accepted Answer

Compare your highest card's APR to what you'd realistically expect to earn investing, after taxes. Almost no card at 18%+ APR is worth carrying while investing elsewhere — that's a guaranteed "return" from paying it down that few investments reliably beat. Once high-rate cards are cleared, the math shifts more toward a genuine trade-off between additional debt payoff and long-term investing, especially against low-rate remaining balances.

Card Name	Balance ($)	Min Pmt ($)	APR %

Card	Balance	APR	Min Payment	Interest Paid	Payoff Month
Visa	$3,500	23.0%	$70	$396	Month 9
Mastercard	$1,800	19.0%	$36	$307	Month 12
Store Card	$650	30.0%	$25	$21	Month 2
TOTAL	$5,950	—	$131	$723	Month 12

Strategy	Order	Interest Saved	Best For
⛰️ Avalanche	Highest APR first	Maximum (mathematically optimal)	People motivated by saving money
❄️ Snowball	Lowest balance first	Good (slightly less than avalanche)	People who need quick wins to stay on track
⚖️ Fixed Budget	Pro-rata split	Good — depends on allocation	People who want simplicity
⚠️ Minimum Only	No extra payments	None — worst option	Emergency cash-flow situations only

Balance	APR	Min Payment	Payoff Time	Total Interest
$1,000	20%	$25	~60 months	~$500
$3,000	22%	$60	~90 months	~$1,800
$5,000	24%	$100	~79 months	~$2,854
$10,000	20%	$200	~94 months	~$8,600
$15,000	22%	$300	~102 months	~$15,200

Credit Card Payoff Calculator — Avalanche vs Snowball

Credit Card Payoff Calculator

📉 Total Debt Balance Over Time — Strategy Comparison

📋 Per-Card Payoff Detail

Avalanche vs Snowball — Which Wins?

The Cost of Minimum Payments

Frequently Asked Questions

Related Calculators