Guide

What is original budget vs actual cost?

How builders should compare the first project budget with final actual cost after a project closes.

Direct answer

Original budget vs actual cost compares the first approved project budget with the final cost incurred. It answers how far the completed project moved from the plan that supported the original decision. Revised budgets are useful, but they should not erase the original assumptions when evaluating what the next project should learn.

Key formula or definition

Formula
Original-budget variance = Final actual cost − Original approved budget.

Why it matters

The original budget is the decision point. The final actual cost is the outcome.

Keeping both visible helps a builder learn which assumptions were reliable.

Example

If the original budget was $860,000 and the final actual cost was $942,000, the original-budget variance was $82,000.

A later revised budget may explain when the change became visible, but it does not replace the original plan.

Illustrative numbers only. Not Bivvit benchmark data.

What changes the result

  • Whether the original budget was complete.
  • Whether owner changes or scope additions should be separated.
  • Whether contingency was used or left unused.

How Bivvit handles it

Bivvit separates original budget, revised budgets, and actual cost where the records support the distinction.

That separation helps builders see when the project changed and how much of the change was visible before closeout.

Related questions

See what happened on your own project.

Send us the records from a completed project. Bivvit will organize the numbers and show what the records support.