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Free contractor tool

WIP & Over/Under Billing Calculator

Enter four numbers and see your percent complete, earned revenue, and whether you're over- or under-billed — the heart of every WIP schedule.

50%
% Complete
$250,000
Earned revenue
$80,000
Projected profit
$0
Under-billed

You're under-billed by $0. You've done more work than you've billed — that's an asset (costs in excess of billings), and it means you're financing the job out of pocket. Get a billing out.

% complete is cost-to-cost (cost ÷ EAC). Earned revenue = contract × % complete. Over/(under)-billing = billed − earned. This is the core of every WIP schedule a CPA or bonding agent asks for.

Why it matters

The report that keeps contractors solvent

Most contractors bill on a schedule that has nothing to do with how much work is actually done. WIP tells you the truth: have you earned what you've billed?

Over-billed looks like a healthy bank balance, but it's borrowed from future work — the classic way a busy contractor runs out of cash mid-job. Under-billed means you're the bank, floating the owner's project with your own money.

Bullwork builds this WIP schedule automatically from your live job costs and billings — every job, every month — so you're never guessing and your CPA isn't rebuilding it by hand at year-end.

Questions

WIP & billing, answered

What is a WIP schedule?

A work-in-progress schedule shows, for each active job, how much you’ve earned versus how much you’ve billed. It’s built on percentage-of-completion accounting and is the report CPAs and bonding agents rely on to judge a contractor’s financial health.

How is percent complete calculated?

The standard method is cost-to-cost: cost incurred to date ÷ estimated total cost at completion (EAC). Earned revenue is then the contract amount × percent complete.

What does over-billed vs under-billed mean?

Over-billed (billings in excess of costs) means you’ve billed more than you’ve earned — a liability; that cash is really the owner’s until you do the work. Under-billed (costs in excess of billings) means you’ve earned more than you’ve billed — an asset, and a sign you’re financing the job.

Why does over-billing feel like profit but isn’t?

Front-loaded billings put cash in the bank early, which looks great — until the work catches up and there’s no billing left to cover the remaining costs. Tracking WIP keeps you from spending money you haven’t earned yet.

Stop rebuilding this in a spreadsheet

Bullwork generates a live, bonding-ready WIP schedule from your real numbers. See it on your jobs.

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