Fractional CFO

Bonding Capacity and the WIP Schedule

Construction contractors need bonding to win larger projects. Bonding capacity hinges on financial statements, and the WIP schedule is the critical input.

By Harry Prabandham3 min · 5 slidesUpdated June 15, 2026

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What Bonding Companies Look For

Surety bonds backstop project completion. Bonding company guarantees the owner that the contractor will finish the job.
Bonding capacity = maximum single-project bond + maximum aggregate (total open bonded work).
Underwriting based on: financial statements (especially balance sheet strength), backlog, project performance history, owner experience, and management quality.
Without bonding: locked out of most public works and larger private projects.

The WIP Schedule

Work in Process (WIP) Schedule: list of all open contracts at a point in time.
Per contract: contract amount, costs incurred to date, % complete, total estimated costs, billings to date, and over/under billings.
Computed: earned revenue, costs incurred, and gross profit earned to date.
Required by every bonding company; underpins your financial statements.
Generated monthly; reconciled to general ledger at close.

Common WIP Mistakes

Optimistic % complete: jobs reported 75% complete when actually 60%. Inflates earned revenue, distorts financial statements.
Underbilling: working ahead of billings (more costs incurred than billed) is fine in moderation but dangerous at scale. It is a sign of cash flow trouble.
Overbilling: billing ahead of work (more billed than earned). Creates deferred revenue, may trigger §451 timing rules for tax.
Forgetting change orders: signed change orders are part of contract value; unsigned change orders are not.

Balance Sheet Strength

Bonding companies look at: working capital (current assets minus current liabilities), tangible net worth, and debt-to-equity ratio.
Typical bonding capacity: 10–20× tangible net worth (single-project), 20–40× tangible net worth (aggregate).
Quality of receivables matters: aged receivables and retentions get discounted in underwriting.
Cash on hand and undrawn credit lines reassure underwriters.

Building Bonding Capacity

Retain earnings: distributions reduce equity, reduce capacity. Build retained earnings before scaling bond requirements.
Audit-quality financials: bondable contractors typically need reviewed or audited financials.
Quality WIP reporting: monthly closes, defensible % complete, clean cost coding.
Build relationships with multiple bonding agents; capacity is partly relationship-dependent.
Need help building bonding-ready financials? Rubric Financial structures construction accounting and WIP reporting for bondable contractors as part of CFO and accounting engagements.

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Educational content, not tax, legal, or accounting advice. Confirm with a CPA before acting.

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