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OUTSOURCE VS IN-HOUSECONSTRUCTION ACCOUNTING COSTBOOKKEEPER VS CFOCFOS $1M–$12MOUTSOURCE VS IN-HOUSECONSTRUCTION ACCOUNTING COSTBOOKKEEPER VS CFOCFOS $1M–$12M
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FINANCIAL OPERATIONS · BUILD VS BUY

OUTSOURCE CONSTRUCTION ACCOUNTING VS IN-HOUSE.

QUICK ANSWER

An in-house bookkeeper at $55,000/year plus benefits costs $76,000–$110,000 all-in annually. An outsourced fractional CFO engagement at $2,400/month costs $28,800/year — and includes job costing, WIP, cash forecasting, and monthly CFO meetings that an in-house bookkeeper cannot provide. The comparison is not just cost. It is what you get for the cost.

Most subcontractors think in-house accounting is cheaper. When you add employment costs, software, training, and turnover, outsourced typically wins on cost and consistently wins on capability. This page runs the full comparison so you can make the decision with real numbers.

BY JOSH LUEBKERPublished: May 2026Updated: May 2026
THE TRUE COST COMPARISON

WHAT IN-HOUSE ACCOUNTING ACTUALLY COSTS.

The salary is just the start. Here is the full loaded cost of an in-house bookkeeper for a $5M commercial subcontractor:

Base salary (bookkeeper, 3+ years experience)$52,000–$62,000
Payroll taxes and workers comp (~12%)$6,200–$7,400
Health insurance (employer contribution)$6,000–$12,000
Software (QuickBooks, payroll platform, job costing)$3,000–$8,000
Training, CPE, certifications$1,500–$3,000
Turnover cost (average 18-month tenure — recruiting + ramp)$8,000–$18,000/yr amortized
TRUE ANNUAL COST$76,700–$110,400

Compare to CFOS Executive Financial at $2,900/month for a $5M subcontractor: $34,800/year — which includes job costing, WIP schedule, 13-week cash forecast, monthly CEO Report, and monthly strategic meetings. An in-house bookkeeper provides none of those outputs.

The capability gap is the real cost. An in-house bookkeeper records transactions accurately. They do not calculate overhead rates, build 13-week cash forecasts, run cost-to-complete reports, or manage your collections process. The $40,000–$75,000 annual premium for in-house buys you proximity — not capability. Outsourced construction accounting brings construction-specific expertise, a system that runs every month, and no training curve on a new hire every 18 months.

WHEN IN-HOUSE MAKES SENSE

THE CASES WHERE IN-HOUSE WINS.

CASE 01

High Transaction Volume Requiring Daily Attention

When you have 50+ employee timecards per week, daily material invoices across 10+ active projects, and multiple subcontractor payments running simultaneously, the sheer volume of transaction processing may justify a full-time in-house position. At this level — typically $15M+ revenue — the bookkeeping labor itself is a full-time job regardless of software automation.

CASE 02

Owner Preference for Daily Accessibility

Some owners want someone in the office available to answer financial questions on demand at any time of day. A fractional CFO engagement runs on a monthly cadence with defined response windows. If real-time daily financial access is non-negotiable, an in-house position is the right structure — though the capability gap still needs to be addressed separately through a fractional CFO or controller layer on top.

THE HYBRID MODEL

WHAT MOST $3M–$12M SUBS ACTUALLY NEED — LAYERED.

The right structure for most commercial subcontractors is a layered model — not purely in-house or outsourced:

Part-time bookkeeper (10–15 hrs/week) for transaction entry and weekly reconciliation — $20,000–$30,000/year
CFOS Core or Executive Financial for job costing, monthly close, reporting, and CFO oversight — $22,800–$34,800/year
Your existing CPA for compliance and returns — existing relationship
Total: $42,800–$64,800/year vs $76,700–$110,400 for a single in-house hire who cannot do everything anyway

This structure is more capable, more resilient to turnover, and typically $30,000–$50,000 cheaper annually.

COMMON QUESTIONS

FREQUENTLY ASKED.

Yes — if your bookkeeper handles transaction entry and reconciliations, CFOS handles everything above that: job costing structure, monthly close and reporting, WIP, cash forecasting, and CFO meetings. Most clients keep their existing bookkeeper and layer CFOS on top. The bookkeeper feeds the data in; CFOS produces the management information from it.
If your entire financial operation depends on one in-house person, their departure creates a gap that takes 4–8 weeks to fill. With CFOS, the system and monthly cadence are owned by SPM — not by an individual employee. Staff transitions at the client's office do not disrupt the close schedule or the reporting cycle.
Yes. Core Financial and Executive Financial both include bookkeeping as part of the engagement — transaction coding, bank reconciliations, and financial statement preparation. The difference from a standalone bookkeeper: everything is coded to job cost codes that produce management information, not just general ledger categories that produce a P&L.
Josh Luebker
Josh Luebker
Fractional CFO · The Construction CFO

Former commercial construction project manager and master electrician. Managed 150+ projects totaling $300M+. Now fractional CFO for commercial subcontractors doing $1M–$12M. About Josh →  |  LinkedIn →

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