Understand the method, then let the spreadsheet do the calculating.

Workbooks that split shared expenses in proportion to income, get you out of debt in a planned order, and keep a freelancer's books straight. Each one runs in Excel and in Google Sheets, and the formulas are visible — nothing is locked behind a password.

Eighteen workbooks, sold on Etsy from €4.79 to €13.19. The free pro rata sheet needs no sign-up to be useful.

Couple budget — pro rata splitsheet 1 / 3
Example of splitting shared household expenses pro rata to income: Camille 60%, Sacha 40%.
Row numberABCD
1LineTotalCamilleSacha
2Net income—€2,400€1,600
3Share of income—60%40%
4Rent€980€588€392
5Utilities€120€72€48
6Groceries€520€312€208
7Total€1,620€972€648
C3=C2/(C2+D2)

The workbooks

Six of them, all in English. Prices are those shown on Etsy today.

All templates

Guides

The method behind each workbook is written out in full, formulas included, and none of it is reserved for buyers. Those articles are in French for now.

Read the guides (in French)

The method is free. The workbook is simply already built.

Rebuilding a pro rata budget by hand takes an evening. A workbook remembers the previous months, recalculates the shares when an income changes, and keeps a record of who paid what. If you would rather build your own, the formulas are in the guides.

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