Kakeibo MethodThe household ledger
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The household ledger

Savings target · USD

Save $1,000 in 9 months

Saving $1,000 in nine months means $111 a month, $25.64 a week, or $3.65 a day. Here is where that comes from in a kakeibo ledger.

$1,000 in 9 monthsUSD · nine months
Every month$111for 9 months, or $120 as a round standing transfer
  • Every two weeks$51.28
  • Every week$25.64
  • Every day$3.65
  • Entries to make274 days
What it costs a dayUnder the line
$3.65

Money stops coming out of discretionary spending alone at $50 a day, where the rule is drawn. This target sits below it.

This lands where a single repeat purchase sits. Kakeibo is unusually good at this size of target, because it makes repeat purchases visible in a way a monthly bank summary never does.

A horizon of this length survives one bad month and not two. Deciding in advance how you make up a shortfall is worth more than any additional discipline.

Against an income

What this asks of your income

Read it as a sanity check rather than a rule. If your take home paycheck is around $556 a month, this target is a twenty percent savings rate, which is demanding but ordinary. Well below that and the horizon is doing the wrong job.

  1. 10%$1,111 a month take home$1,000 left to live on
  2. 15%$741 a month take home$630 left to live on
  3. 20%$556 a month take home$444 left to live on
  4. 25%$444 a month take home$333 left to live on
  5. 30%$370 a month take home$259 left to live on

The dark slice is $111, the same money on every rung. What changes behind it is the pay packet it has to come out of, which is the whole reason a savings rate is a better question than a savings amount. The marked rung is twenty percent.

Where the money comes from

Which envelope pays for it

Kakeibo sorts spending into four envelopes rather than dozens of line items, and that is what makes a question like this answerable.

  • Survivalwhat keeps the lights on: rent or mortgage, groceries, utilities, gas, insurance
  • Optionaltakeout, streaming and the shopping you would not miss
  • Culturea class, a museum membership, books
  • Extrathe irregular hit: car repairs, a wedding gift, the vet

$111 a month, carved

  • Optional100%$111

Total moved to savings$111 a month

Splitting it across Optional alone keeps the target inside discretionary spending, which is where kakeibo does its best work. Optional is takeout, streaming and the shopping you would not miss, and the ledger will tell you which line it actually is within a couple of weeks.

A target at this scale is usually a first buffer rather than a purchase, and it is the single most useful thing a household ledger has ever been pointed at.

The method, against this number

The four questions, against this target

The method is four questions asked once a month, in that order. Here they are with this page's numbers in them. The long version of each, with the reflection prompts, is in the four questions guide.

  1. 01How much money do you have?Everything that lands in the month, before anything is committed. The plan below only works from a real figure rather than a remembered one.
  2. 02How much would you like to save?$111 a month, or $120 if you would rather set a round standing transfer and finish early.
  3. 03How much are you spending?Recorded by hand, in four envelopes, as it happens. This is the part that makes the $1,000 possible, and the part every method skips at its peril.
  4. 04How can you improve?Answered once a month for 9 months, in writing, against the running total rather than against a feeling.
If the plan changes
The same target on every other horizonA month, then a day
Every other target on this horizonA month, then a day

$3.65 a day is under the $50 a day line, which is where a target stops being a spending question and becomes a housing, transport or insurance one. On nine months you could carry $13,696 before crossing it, so there is $12,696 of room in this plan.

Or work from your own figures in the save an amount by a date calculator, and start from the method itself in what is kakeibo.

Common questions

How much do I need to save each month to reach $1,000 in 9 months?
$111 a month. Set it to $120 and you arrive early with a small cushion, which is usually worth more than the exact figure.
What is that per week and per day?
$25.64 a week, $51.28 every two weeks, and $3.65 a day across roughly 274 days.
Which kakeibo category should the money come from?
Start with Optional. On this target it carries about 100 percent of the monthly figure, which is $111. The ledger tells you the specific lines within a fortnight.
What happens if I miss a month?
The shortfall spreads across what is left. Missing one month here adds about $13.89 to each remaining month, so it is recoverable, and the monthly reflection is where you decide whether to absorb it or move the date.

$111 a month is arithmetic. Holding it is the ledger.

Kakeibo works because you write the spending down as it happens and read it back once a month. The app does the totals so the writing down is the only work left.

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The Kakeibo app showing a monthly budget with income, expenses and a savings goal in progress