Japanese money management
家計簿Kakeibo & debt payoff
The household ledger method, since 1904
Kakeibo (家計簿) is a Japanese budgeting practice built on four honest questions a month — no app, no daily tracking. Pair it with a debt payoff calculator that compares the avalanche and snowball methods, and you have a complete plan.
Three ways to think about debt
Avalanche saves the most money. Snowball builds momentum. Kakeibo gives you the monthly habit that makes either one stick.
Avalanche
Kuzure
Pay minimums on everything, send every extra dollar to your highest-interest debt first. Mathematically the cheapest path.
Snowball
Yuki
Pay off your smallest balance first for a quick win, then roll that payment into the next-smallest. Built for momentum.
Kakeibo
Household book
Four questions, once a month: what you have, what you spend, what must go to debt, and how you can improve.
Calculators
Free tools — nothing is sent to a server, all math runs in your browser.
Debt Payoff Calculator
Compare the avalanche and snowball methods for your actual debts. See your debt-free month and total interest.
Open calculator →Budget Calculator
Turn Kakeibo questions one and two into real numbers: see where your money goes and compare it to the 50/30/20 rule.
Open calculator →Debt-to-Income Calculator
Check your DTI ratio the way lenders do, and see where you stand before you apply for a loan.
Open calculator →Emergency Fund Calculator
Find your target emergency fund based on expenses, income stability, and family size — and how long it takes to get there.
Open calculator →Savings Goal Calculator
Find your target date with a fixed monthly contribution, or the contribution needed to hit a target date.
Open calculator →Net Worth Calculator
Assets minus liabilities — a snapshot of your financial health, with age-bracket benchmarks.
Open calculator →Debt Consolidation Calculator
Compare keeping your current debts versus rolling them into one consolidation loan.
Open calculator →Minimum Payment Trap Calculator
See how long minimum payments really take, and how much a higher fixed payment saves.
Open calculator →Mortgage Calculator
Estimate your monthly payment, total interest, and a 12-month amortization schedule.
Open calculator →From the guide
More on Kakeibo and debt payoff strategy.
Credit Card Debt Payoff: How to Get Rid of High-Interest Debt Fast
Credit card debt can feel overwhelming, but with the right strategy you can pay it off faster than you think. Learn how to tackle high-interest debt and save thousands.
Debt Payoff Strategies: Avalanche vs. Snowball vs. Minimum Payments
When you have multiple debts, the strategy you choose can save you thousands of dollars and years of payments. Compare avalanche, snowball, and Kakeibo with a real example.
Kakeibo (家計簿): The Japanese Method for Paying Off Debt
Kakeibo was created by Motoko Hani in 1904. Four monthly questions help you see where your money goes and pay off debt with intention.