Tracking expenses is a tool most people adopt for one reason: they want an overview. The problem arises when the tool is chosen by availability (a spreadsheet someone shared, an app you happened to download) rather than by what you actually expect from tracking your finances. As a result, someone spends three months recording expenses in a detailed spreadsheet with categories and subcategories and, despite exact figures, cannot say why they spend the way they do. Another person tries a simple journal and finds they lack the data to compare months.
Both approaches can work, just not for the same question. An expense-tracking spreadsheet and kakeibo are not two versions of the same thing. They are two different tools with different purposes.
Expense-tracking spreadsheet: a tool for checking the numbers
A spreadsheet (in Excel, Google Sheets or a similar tool) is built on categorisation, aggregation and comparison. Its value lies in being able to answer questions such as: How much did I spend on food compared with last month? Is the share of my fixed costs growing? Where is the biggest deviation from the plan?
For a spreadsheet to work, it needs three things: consistent categories, regular data entry and someone who actually reviews the data, not just records it. Without the third condition, the spreadsheet becomes an archive of numbers with no function. This is a common scenario: the more detailed the category structure, the greater the chance that recording turns into an administrative burden that a person drops after a few weeks.
A spreadsheet is therefore most useful where decisions recur and have a measurable impact: a company budget, tracking multiple income and expense streams, planning over a longer horizon. In short, wherever accuracy and comparability over time have direct value.
Kakeibo: a tool for reflection, not for reporting
Kakeibo (Japanese for "household ledger", literally) was created in 1904. It was devised by Hani Motoko, who is regarded as the first female journalist in Japan, and published in a women's magazine as a way of giving women who ran households a practical tool for managing money. The method has barely changed since.
The whole method revolves around four main questions: how much income you have, how much you want to save, how much you spend, and how you can improve. Expenses are divided into four categories: essentials, non-essentials, culture (for example books or exhibitions) and unexpected expenses.
At first glance it is a simpler system than an expense-tracking spreadsheet: fewer categories, no formulas, no charts. That is by design, not a shortcoming. Kakeibo is not optimised for the accuracy of the numbers, but for prompting a person to ask, before any larger purchase, whether they really need it, and at the end of the month to reflect on which spending was intentional and which was impulsive. Here the number serves as a prompt to pause, not as an output for analysis.
That is why kakeibo is typically done by hand, in a notebook. Handwriting slows down the recording process and makes a person give each expense at least a few seconds of attention, which is exactly the opposite of the principle behind automated expense tracking, where the aim is to minimise the time spent entering data.
Where the difference lies, and why it isn't the same thing in a different wrapper
The difference between the two approaches is not that one is "more accurate" and the other "simpler". The difference lies in what is measured and why:
An expense-tracking spreadsheet answers the question of where the money goes. Its value grows with the volume and regularity of the data, and with the number of decisions that can be made on the basis of it.
Kakeibo answers the question of why the money goes where it goes. Its value does not depend on the accuracy of the numbers, but on whether the recording prompts genuine reflection.
That has a direct bearing on when each approach makes sense. A spreadsheet does harm when it is used where the main need is to change one's relationship with impulse purchases: detailed categorisation gives a sense of control without changing anything at the moment of decision (that is, at the point of purchase). Kakeibo, on the other hand, does not work where the aim is to compare several expense categories precisely over time or to handle multiple income sources, since four broad categories are simply not enough for that.
How to choose
Instead of asking "which system is better", it makes sense to ask: what exactly do I want to achieve by tracking my expenses?
If the goal is to get an overview of how your spending is structured, compare months with each other or work with a budget over a longer horizon, a spreadsheet is the more suitable tool, and the simpler it is and the easier to keep filling in regularly, the better it works in practice.
If the goal is rather to understand your own spending behaviour, curb impulse purchases or build a regular ritual of reflecting on money, kakeibo is closer to what is needed, even at the cost of less precise data.
Both approaches can also be combined: a spreadsheet for the monthly overview and planning, and kakeibo for weekly or monthly reflection on what lies behind the numbers. What matters is not to confuse a tool for control with a tool for reflection, which is the most common reason why expense tracking falls apart after a few weeks.
For those who want to stay with the kakeibo principle but without manual calculation, my Kakeibo Pro template in Google Sheets is designed for this. It keeps to the original four expense categories and adds charts, an annual overview and a dashboard that aggregates the monthly entries, which covers part of the work that would otherwise have to be done by hand when moving from a paper notebook to a digital format.
