household · local-first tool
Keep a Home Project Budget Beside Actual Spend
The overrun is easier to see while each materials, labor, and delivery line is still named.
Compare planned and recorded project amounts by line, summarize variance, and preserve the user's own contingency assumption.
What changes the result: your chosen project lines, amounts, and budget period.
Privacy: Calculations run in this browser tab. This tool has no input-upload, account, or AI endpoint. The site may send a page-view signal to Cloudflare; this tool does not add form entries to that signal. A draft is stored only if you choose “Save draft on this device”; that browser storage is not encrypted. Avoid identifiers or sensitive details, and delete saved drafts when finished.
Your entries
The starting rows below are fictional examples. Edit them, replace them with non-sensitive labels and values, or load the sample again. The result is not advice or a source verification.
Amount fields use the same units you enter; the app does not choose a currency. Dates are the ones you provide. Up to 100 rows per run.
Calculated output
What the calculation does
For each line, subtract the entered planned amount from the entered actual amount. The summary adds the plan and actual columns separately, then reports their difference. It does not label a charge valid or decide whether a change was authorized.
Question to keep open: Should a small line-item overrun trigger a project change, or should the decision wait for the whole scope and contingency to be visible?
Boundary: This is transparent arithmetic from user-entered assumptions, not financial, legal, accounting, tax, contract, or purchasing advice. Verify the source documents and decide with the responsible person.
Copy includes the headline, aggregate metrics, and boundary—not the row-by-row input. The CSV contains entries you choose to download. Review it before sharing.