INDUSTRIAL & ENERGY CLUSTER · CFOS TRADE OPERATING SYSTEM

WHY TANK / VESSEL CONTRACTORS LOSE MARGIN WITHOUT KNOWING IT.

QUICK ANSWER

Tank / Vessel margin is lost to three specific things: the two-code book, the hydro gate, and the window premium. All three are measurable, and all three are invisible without job costing that reads against the estimate.

Tank and vessel contractors at $1M to $5M net 7 percent on the SPM 48-trade dataset, rising to 10 percent by $25M to $50M, a curve consistent with code-work premiums; the CFOS target at $1M to $5M is 10.5 percent. The distance between the trade average and the CFOS target isn't a pricing problem in this trade. It sits in the three mechanisms below, each of which moves margin without appearing as a failure on any single job. API 650 new-build runs project economics; API 653 inspection-repair runs condition-triggered recurring demand. One blended P&L misprices both, and the recurring side is the stability the project side borrows against.

BY JOSH LUEBKERPublished 2026-08-06Updated 2026-08-06
THE THREE BIG LEAKS

THE MATH BEHIND THE MISSING CASH.

LEAK 01

The Two-Code Book

API 650 new-build runs project economics; API 653 inspection-repair runs condition-triggered recurring demand. One blended P&L misprices both, and the recurring side is the stability the project side borrows against.

LEAK 02

The Hydro Gate

Qualifications, weld maps, NDE, and a structure full of test water stand between substantial completion and the check. Documentation-complete billing, with the hydro planned as a logistics event, is the trade's collection discipline.

LEAK 03

The Window Premium

Turnaround work compresses into owner outages where premium shifts are the plan and late unit release is the trap. Price the window explicitly and document the standby; the outage clock bills somebody. (cfos-job-profitability-system) ---

HOW CFOS FIXES IT

WHAT CHANGES IN THE FIRST 60 DAYS.

Two codes, two businesses (650 new-build vs 653 inspection-repair)
The qualification and dossier economics (process piping's grammar, plate-sized)
The shutdown window (compressed-schedule premiums)
Plate, alloy, and the fab/field split
Confined space, coatings, and the entry-permit day
TANK / VESSEL BENCHMARKS
Metric$1M to $5M$5M to $10M$10M to $25M
Gross margin, industry average23%24%25%
Gross margin, CFOS target24.5%24.5%25%
Net profit, industry average8%10%12%
Net profit, CFOS target10.5%11.5%13%
Overhead, industry average15%14%13%
Overhead, CFOS target14%13%12%

Industry figures are Tank / Vessel contractors' AVERAGE for each revenue band, not a floor. The CFOS net profit target is set at 10 percent before taxes or 3.5 points better than your trade's average at your revenue, whichever is higher, and the gross margin target is set at whatever gross margin produces that net profit once your overhead is paid, and never below your trade's own average. Gross minus overhead equals net on every column, so the rows tie out. The gross margin and overhead figures for this trade are derived from the nearest comparable trade in the same dataset, and were not measured directly.

Last 12 months revenueMonthly fee
Up to $1M$1,900 to $2,900
$1M to $3.5M$2,600 to $3,900
$3.5M to $6.5M$3,800 to $5,700
$6.5M to $9.5M$5,100 to $7,100
$9.5M to $12.5M$6,100 to $8,500
$12.5M to $15.5M$7,400 to $11,000
$15.5M to $18.5M$9,400 to $13,500
$18.5M+Quoted individually

Range reflects the three tiers below. Which one you're in depends on how much of the work you want off your desk. No payroll. No hidden line items.

Core

You stop guessing.

You get the CFO work. Job costing built against the way you estimate, a 13 week cash forecast, monthly WIP, and a meeting every month that ends in decisions rather than a report.

Your bookkeeper keeps doing the books.

Executive

You stop touching the books.

Everything in Core, and we run the bookkeeping and the controllership as well. Nobody in your office is answering coding questions or chasing a reconciliation at month end.

We do the books. No payroll.

Strategic

Every job shows its margin while it's still running.

Everything in Executive, plus the job costing and WIP platform set up, loaded with your cost codes, and managed for you every month. You never have to learn it.

We do the job costing.

What's included
COMMON QUESTIONS

FREQUENTLY ASKED.

Tank/vessel contractors at $1M to $5M net about 7 percent on the SPM 48-trade benchmark dataset, rising to 10 percent by $25M to $50M; the CFOS target at $1M to $5M is 10.5 percent. The curve runs strong for the tail because code work prices its qualifications, and the leaks are blended 650/653 books and windows priced at straight time. Every net profit figure here is stated before taxes, the same basis CFMA reports on, so the two are directly comparable.
Because they're different businesses: API 650 new-build runs project economics with fab, erection, and hydro gates, while API 653's mandated inspection intervals generate condition-triggered repair demand that recurs like the other inspection-driven markets. Separate P&Ls show which side carries the shop and price each honestly.
The dossier and the hydro: welder qualifications current under the six-month rule, weld maps and NDE records complete, and a hydrostatic test that means filling the structure with water (sourcing, hold, disposal all scheduled). Bill documentation-complete and plan the hydro as its own logistics event on the cash forecast.
By the window: premium-shift labor as the baseline, standby exposure priced for late unit release, and acceleration terms understood before signing. Outage schedules compress every trade into the same days; the contractor who priced the compression keeps the margin it creates.
A daily compliance class: entry permits, attendants, atmospheric monitoring, ventilation, and rescue provisions on every internal day, plus coating and lining cure windows that control the schedule. Carried explicitly per entry-day, it's a cost; absorbed invisibly, it's the margin.
Sulphur Prairie Management, operating as The Construction CFO, publishes the 48-trade benchmark dataset these numbers come from. SPM's deepest specialization is 24 core commercial trades, and SPM works with tank/vessel contractors who want the same financial system: onboarding, clean books, a maintained 13-week cash flow forecast, and monthly health reviews, with job costing simplified to what the business runs on. The full 48-trade benchmark reference exists so owners in every trade can measure against real numbers. ---
CFOS serves commercial tank / vessel subcontractors doing $1M to $12M. Pricing starts at $1,900 per month for companies under $1M and runs to $13,500 per month at the top published band. Onboarding takes 60 days.
Three tiers, and which one you are in depends on how much of the work you want off your desk. Core is where you stop guessing: job costing built against the way you estimate, a 13 week cash forecast, monthly WIP, and a monthly meeting that ends in decisions, while your bookkeeper keeps doing the books. Executive is where you stop touching the books, because we run the bookkeeping and the controllership as well. Strategic is where every job shows its margin while it is still running, because the job costing and WIP platform is set up and managed for you. No payroll. No scope gaps.
Sixty days. We migrate your books back to the start of your last taxable year, set up ControlQore, and build your job costing structure from scratch. Fully operational in two months.
$10.7M+
Client AR Recovered Since 2023
48
Active Trade Specializations
60 DAYS
Average Onboarding Time
WHAT THIS TIES INTO
Josh Luebker, The Construction CFO
Josh Luebker
FRACTIONAL CFO · THE CONSTRUCTION CFO

Former commercial construction project manager and master electrician. Managed 150+ projects worth more than $2.1B combined, with individual jobs from $50,000 to $300M, including data centers, military bases, hospitals, and high-rises. Now fractional CFO for commercial subcontractors doing $1M to $12M through Sulphur Prairie Management.About Josh  | LinkedIn

DO YOU KNOW YOUR TRUE MARGIN ON TANK / VESSEL WORK?

Bring one job. We will show you the difference between what you bid and what it cost.

You don't hire a CFO because it's safe, you do it because the real risk isn't having one.
Book a 20 minute diagnostic

20 minutes. No sales pressure. We will tell you exactly what's broken before we talk about anything else.

OR START WITH THE WORKBOOKS. NO CALL NEEDED.