How long can we sustain at current capacity?
№ 092 · Backlog coverage in months
Definition
MetricSigned, unrecognized contract value divided by average monthly recognized revenue
Unitmonths of revenue under contract
Single line showing booked-but-undelivered revenue divided by monthly run rate. Above 3 means healthy pipeline. Build by dividing total backlog by trailing 3-month revenue. Below 2 signals pipeline alarm. Example: 4.2 months coverage Q1, 2.8 months Q3 (pipeline weakening).
Benchmarks
| Bottom 30% | Median | Top 30% |
|---|---|---|
| under 1.5 months, or any coverage shorter than the firm's own sell-to-start cycle | roughly 3-4 months for mixed project services; published anchors are 7.6 months for architecture (2023) and about 1.4 months for technology PS (backlog at ~46% of quarterly target) | 6+ months for engineering-style project firms; 2+ months for fast-cycle technology consulting |
Two distinct definitions blended: Deltek Clarity A&E backlog in months of net revenue (US/Canada A&E firms) and SPI backlog as % of quarterly revenue target at quarter start (global technology PS); the healthy level depends entirely on project length and sales cycle · No single dataset covers services broadly on one definition; the median band is a triangulation across the two anchors, and the SPI 46.2% figure is 2017 data, flagged as dated. Deltek reports A&E backlogs softening from recent highs in both 2024 and 2025 data. Very high backlog is also a warning: Clarity participants read it as under-staffed delivery and deadline risk, not strength.
Category split omitted: Only Deltek publishes an A&E backlog figure and only SPI a technology-services figure; no category split is covered by two independent sources.
When it looks bad
The bars step down month after month while headcount stays flat, and coverage crosses below the firm's average sell-to-start cycle, so bench time becomes arithmetically unavoidable.
Coverage fell from 4.1 to 1.8 months over two quarters with the team held at 22 FTEs; at a 2-month average sales cycle, even a deal signed today cannot fill next month's capacity.
What to do about it
- Open renewal and extension conversations 90 days before every contract end date; existing accounts are the cheapest backlog, and ANA/4A's pitch data shows two thirds of competitive reviews end with the incumbent retained anyway.
- Tighten the pipeline-to-backlog conversion step rather than adding top-of-funnel; SPI 2026 shows pipeline coverage at 175% of bookings forecast while delivered work lags, so the leak sits between proposal and signature.
- Convert repeat project clients to 6-12 month contracted programs; retainer-model clients stay around 56 months vs 24 for project clients (Focus Digital), turning episodic demand into standing backlog.
- Trigger hiring on backlog coverage thresholds, not on pipeline optimism; Clarity participants read abnormal backlog in either direction as a staffing signal first.
Sources
- Deltek Architecture firms reported 7.6 months of backlog in 2023 (Deltek Clarity A&E Study); backlog volume framed as the core planning KPI for staffing and cash flow deltek.com ↗
- Deltek 46th Clarity study (2024 data, ~700 firms): backlogs softened from recent highs even as firms posted a 10-year-high 21% operating profit on net revenue deltek.com ↗
- Deltek 47th Clarity study (2025 data, ~900 firms): backlogs continued softening; firms forecast 9.5% net revenue growth for 2026 while utilization slipped under 60% deltek.com ↗
- SPI Research (via EIN Presswire) Technology PS: project backlog at 46.2% of quarterly revenue target at quarter start in 2017, roughly 1.4 months (dated; SPI has tracked the metric annually since) einpresswire.com ↗
- Deltek (SPI Research data) Adjacent 2025 signal: deal pipeline coverage rose to 175% of quarterly bookings forecast (pipeline, not signed backlog; the two must not be mixed) deltek.com ↗
- Deltek Practitioner note from Clarity participants: backlog far above industry average often signals staffing shortfalls and deadline risk rather than commercial strength deltek.com ↗