How many categories to start with
Too few categories hide where money goes; too many turn every grocery run into a sorting exercise and leave dozens of lines with a single transaction. A practical starting range is 15 to 25 categories, grouped so the totals of each group answer a useful question: what is committed, what is controllable, what is lumpy and what is being saved.
App defaults are usually broader than you need. Monarch's blog says it provides 60 default categories and lets you add custom ones. PocketSmith's default structure guide lists 13 parent categories with sub-categories under each. Start from those lists, but hide or merge what you will not use.
This is research from official pages read on 30 October 2026, not firsthand testing. We have not opened these accounts or run the features described; help pages change, so confirm the live page before you rely on a detail.
The starter list
Use this as a checklist, deleting what does not apply. Irregular costs are monthly set-asides for bills that are not monthly; our sinking funds guide shows how to size them.
| Group | Starter categories | Notes |
|---|---|---|
| Fixed bills | Rent or mortgage; Utilities; Phone and internet; Insurance paid monthly; Loan and card minimums; Childcare; Subscriptions | Same amount or close to it every month |
| Variable essentials | Groceries; Fuel and transit; Medical and pharmacy; Household supplies | Needed, but the amount moves |
| Variable wants | Dining out; Entertainment; Shopping; Personal care | Where most month-to-month adjustments happen |
| Irregular costs | Car maintenance and registration; Annual insurance premiums; Gifts and holidays; Travel; Home repairs | Budget one-twelfth of the yearly total each month |
| Goals | Emergency fund; Extra debt payments; Retirement or other savings | Money given a job before spending |
| Non-spending | Transfers between own accounts; Card payments; Reimbursements | Exclude from spending totals |
Sanity check against federal spending data
The Bureau of Labor Statistics Consumer Expenditure Survey, released 29 October 2026 for calendar year 2025, reports average annual spending of $81,905 per consumer unit and average income before taxes of $110,847. The shares below are averages across all households, so a renter in a high-cost city or a family with a long commute will differ. If one of your groups is far from these shares, check that it is not mislabelled before deciding you overspend.
| BLS component (2025) | Share of spending | Average dollars per year | Where it lands in the starter list |
|---|---|---|---|
| Housing | 33.9% | $27,790 | Fixed bills (rent or mortgage, utilities) plus household supplies |
| Transportation | 16.5% | $13,492 | Fixed (car payment, insurance), variable (fuel), irregular (maintenance) |
| Food | 13.0% | $10,633 ($6,491 at home, $4,142 away) | Groceries and Dining out |
| Personal insurance and pensions | 12.4% | $10,175 | Goals (retirement) and payroll deductions |
| Healthcare | 7.9% | $6,470 | Medical and pharmacy; insurance premiums |
| Entertainment | 5.0% | $4,084 | Entertainment; Subscriptions |
| Cash contributions | 2.7% | $2,237 | Gifts and giving |
| Apparel and services | 2.5% | $2,010 | Shopping |
| Education | 1.9% | $1,583 | Childcare or a separate Education line |
Trimming after month one
After the first full month of categorized transactions, run three tests. The goal is a list you can categorize in a few minutes a week, not a perfect taxonomy.
- Merge: a category with one or two transactions and under about 2% of spending usually belongs inside a neighbour, such as Coffee into Dining out.
- Split: a category holding more than about a fifth of spending that mixes needs and wants, such as Shopping covering both household goods and clothes, deserves two lines.
- Move: anything you reach for a second category to describe, such as a gift bought at a grocery store, signals a split transaction rather than a new category.
- Hide, do not delete: archive categories you might need again; PocketSmith documents archiving old categories after ending their budgets.
- Check transfers: if card payments or moves to savings show up as spending, set those categories to be excluded from totals.
How the groups map into each app
Each app has its own structure for groups. Where a detail is not verified here, the cell says so; check that app's help pages.
| App | Grouping structure | How the starter groups fit |
|---|---|---|
| Monarch | Two budget styles: category budgeting, or flex budgeting with Fixed, Flexible and Non-monthly buckets; 60 default categories; groups and categories editable | Fixed bills to Fixed; both variable groups to Flexible; irregular costs to Non-monthly; keep goals as their own savings categories |
| PocketSmith | Two levels: parent categories with sub-categories; budget at sub-category level and roll up to parent | Use the four groups as parent categories, or keep its 13 default parents and hide unused ones |
| Lunch Money | Category groups; a category belongs to one group; optional group budgeting with group-level rollover | Create one group per starter group; use group budgeting for Variable wants if you only want one number |
| YNAB | Its method page frames non-monthly costs as money set aside For Later; category group mechanics not verified in pages we could read | Give irregular costs their own group so set-asides are visible |
Who should use a longer or shorter list
People tracking tax-relevant spending or a side business need more categories, and Monarch's own comparison suggests category budgeting for that. People who have struggled to keep any budget going may do better with fewer lines; flex budgeting or a single group budget for discretionary spending reduces the sorting to almost nothing.
Questions before you decide
How many budget categories should I start with?
There is no official number. We suggest 15 to 25 because it is enough to separate needs from wants without leaving many categories with one transaction a month. For comparison, Monarch says it provides 60 default categories, and PocketSmith's default structure has 13 parent groups with several sub-categories each.
Is my housing share too high?
The Bureau of Labor Statistics reports that housing was 33.9% of average household spending in 2025. That is an average across all households, not a target, so a higher share is common in expensive areas. Use it as a prompt to check, not a rule.
Should transfers and card payments be categories?
They should exist but be kept out of spending totals, otherwise money moving between your own accounts is counted twice. PocketSmith's defaults include a Transfers and Repayments group, and Lunch Money lets a category be excluded from totals.
Can I budget a whole group instead of each category?
Lunch Money documents optional Category Group Budgeting, where the group acts as one combined amount and rollovers happen at the group level. Monarch's flex budgeting goes further, budgeting flexible spending as one number.
Follow the sources
- U.S. Bureau of Labor Statistics: Consumer Expenditures 2025 news release Checked Oct 30, 2026
- PocketSmith Learn Centre: Default category structure Checked Oct 30, 2026
- PocketSmith Learn Centre: Reviewing and updating budgets Checked Oct 30, 2026
- Lunch Money knowledge base: Category groups Checked Oct 30, 2026
- Lunch Money knowledge base: Step 2, setting up your budget Checked Oct 30, 2026
- Monarch blog: Flex vs category budgeting, how to choose Checked Oct 30, 2026
- Monarch: Budgeting features Checked Oct 30, 2026
- YNAB: The YNAB Method Checked Oct 30, 2026
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