A project that starts on budget can still finish well over it if nobody’s tracking spend as it happens. This tracker compares your planned project costs to actual spend in real time, with variance calculated automatically, so cost overruns show up while there’s still time to course-correct.
Included in the $7/mo Tools Club · Works in Excel or Google Sheets · Includes a built-in AI prompt
Checking project spend only at the very end, after the money’s already gone, means any overrun is discovered too late to do anything about it. Tracking budget versus actual continuously, while the project is still active, is what actually lets you catch and correct a cost overrun in progress.
Download and open in Excel or Google Sheets
Requires a Tools Club membership — log in first to access the file.
Break the project budget into categories or phases
This gives you more useful detail than a single lump-sum total.
Log actual spend as it happens
Real-time logging is what makes this a genuinely useful management tool rather than a retrospective report.
Review the automatic variance and remaining budget
This shows you exactly where the project stands relative to plan at any point.
Run the built-in AI prompt if a category is trending over
Attach the saved file to ChatGPT or Claude and ask what’s driving the overrun and what to do about it.
Built-in AI prompt
Once you've filled this template in, it includes a ready-to-use prompt at the bottom of the sheet. Attach your saved file to ChatGPT, Claude, or any AI chat tool and paste it in — you'll get plain-English feedback on which project categories are trending toward a cost overrun, and what’s likely driving it based on the spend pattern, no accounting background required.
Only checking the budget at project completion
By then, any overrun has already happened — check in regularly throughout the project, not just at the end.
Using a single lump-sum budget instead of categories or phases
Breaking the budget down gives you far more useful information about exactly where an overrun is coming from.
Not accounting for scope changes
If the client or project scope changes mid-project, formally update the budget to reflect it — otherwise every variance calculation becomes misleading.
Ignoring early warning signs of an overrun
A category trending over budget in an early project phase is a signal worth acting on immediately, not waiting to see if it "evens out" later.
70+ editable templates, each with a built-in AI prompt. $7/month, cancel anytime.
Join the Tools Club