Fractional CFO for Tech Startups

Your seed round closed eight months ago. The board wants a model.
You don't have one.

You’re between bookkeeper and full-time CFO.

Most tech founders sit there for two to three years. A fractional CFO closes the gap: monthly board reporting, an investor-grade model, runway you can defend, and the tax planning that compounds before your Series A.

Runway forecast dashboard with upside, base, and downside scenarios for Series A funding.

Trusted by the Best in the Buisness:

Engagement
10–30hrs/mo
Scoped to your reporting cadence
First model
30days
Board-ready model in your stack
Pricing
$4–12K/mo
Fixed monthly · no hourly billing
Cost vs FT CFO
25%
Of a $250K loaded cost
What it actually does

Senior finance, scoped to what you actually need.

A fractional CFO is a senior finance lead engaged part-time, usually 10 to 30 hours a month. The work covers strategic finance, investor reporting, and tax coordination. That means a defensible runway model, monthly board updates, KPI dashboards tied to your accounting system, fundraising support, R&D credit planning, and cash forecasting that holds up under questioning.

You don't get a controller writing journal entries. You get a finance partner who can sit in a board meeting, walk an investor through your model, and tell you whether to extend the round or cut burn.

When you need one

Three signals it's time to hire one.

Most founders know they need help around the same time. Cash gets tighter. Board questions get sharper. The Google Sheet model breaks the second an investor probes it.

Signal 01 Most common

Your model can't survive a fundraise.

Single tab in Excel. Hardcoded numbers. Doesn't tie to your books. The first investor who probes it finds three errors in twenty minutes. Your runway is whatever the bottom-right cell says — and nobody trusts that cell, including you. Walking into a Series A with that model adds four to six weeks to the round.

Runway Series A Diligence Investor model
Signal 02

Board questions outrun your reporting.

Quarterly board meetings. Questions about gross margin trends, cohort retention, and CAC payback. Your bookkeeper can't answer those. Your Google Sheet doesn't have those metrics.

Board pack KPIs
Signal 03

Between bookkeeper and full-time CFO.

You're at $1M to $10M ARR. A $250K full-time CFO doesn't make sense yet. You'll sit in this gap for two to three years — fractional fills it without the W-2 cost.

$1M–$10M ARR Pre-Series B
What we do

Strategic finance, built into the books.

Driver-based model

A runway model your board trusts.

Tied to your QBO or Xero data, with ARR, burn, headcount, and cash runway as live drivers. Updated after every close. Three scenarios maintained: base, upside, downside.

  • Driver-based — ARR, GM, headcount flow through
  • Built in your stack: Causal, Mosaic, Sheets, or Excel
  • Defensible in a fundraising conversation
Runway · Mar 2026 Live
Up
28mo
Base
21mo
Down
12mo
Monthly board pack

The deck investors actually want.

ARR waterfall, GAAP P&L, cash position, KPI dashboard, and variance against plan. Each pack ties back to source data. No reconciliation gaps between deck and books.

  • NRR, CAC payback, burn multiple, magic number
  • Variance vs. plan with commentary
  • Delivered before the meeting, not the day of
Q1 2026 KPIs QBO synced
ARR
$4.8M
+38% YoY
NRR
118%
+4 pts
Burn Multiple
1.4x
−0.3x
CAC Payback
14mo
+2 mo
Fundraise diligence

Data room built before the term sheet.

ARR build, deferred revenue schedule, customer cohort analysis, expense trends, cap table tie-out. When investor diligence starts, we answer the questions directly.

  • Contract-level ARR build with renewal flags
  • Cohort NDR + logo retention
  • §1202 (QSBS) eligibility memo
/ Diligence — Series A 14 files
Driver_model_3yr_forecastXLSX
ARR_build_contract_levelXLSX
Cohort_NDR_logo_retentionXLSX
Cap_table_tieout_CartaXLSX
§1202_QSBS_eligibilityMEMO
Tax planning

Tax planning, built into the model.

§41 R&D credit study, §174A method changes, §1202 QSBS qualification, and §83(b) tracking — coordinated with your tax preparer, not bolted on at year-end.

  • §41 study with project-level documentation
  • §174A retroactive election tracked
  • §83(b) elections filed within 30-day window
Tax timeline · FY 2026 4 events
Q1
§41 R&D study scopedQRE est. · payroll segmented
+$138K
Q2
§174A method changeRetroactive · 2022–2024
Cash savings
Q4
QSBS clock review5-yr hold tracked
Eligible
What you can expect
30days

Most clients have a board-ready model within 30 days. Founders heading into a Series A typically save four to six weeks of diligence cycle time, because the data room is already built before the term sheet lands.

We don't onboard for a quarter before producing anything useful. The first model lands the same month we start.

From engagement start Average across 2024–2025 clients
Why founders pick us

Where we're different.

Five things we do that most fractional CFO engagements don't. Side by side, no spin.

Model and books in the same hands. The team that owns close also owns your board pack.
Model handed off to a separate bookkeeper or accountant. Reconciliation gaps appear at month-end.
Tech-specialist lead with venture-backed CFO experience. We've sat where you sit.
Generalist marketplace match. You get whichever advisor was available that week.
QBO, Xero, Carta, Pulley, Stripe, Mercury, Brex, Ramp, Causal — your stack, not ours.
Forced migration to a proprietary platform. Three months of onboarding before a useful output.
Direct Slack with your engagement lead. Response under four hours during business days.
Ticketing portal or "your account manager will get back to you within 48 hours."
Fixed monthly fee. You know what you're paying before the month starts.
Hourly billing with scope creep. Invoices that show up bigger than the engagement letter implied.
Who we work with

Real categories. Not "innovative tech leaders."

We work with venture-backed founders between $1M and $10M ARR. Crypto-native companies with token treasuries. SaaS companies signing annual contracts. AI startups burning on engineers and GPUs. Healthtech and biotech tracking grant revenue alongside commercial.

If your last fundraise took longer than it should have because your numbers weren't ready, you're in the right place.

$1M–$10M
ARR range
Seed → Series B
Stage focus
Industry & stage
Seed → Series B SaaS AI startups pre-Series A Venture-backed founders Healthtech with grant revenue Biotech Crypto-native with token treasuries Annual contract SaaS Usage-based pricing Pre-Series A board reporting
How we compare

Fortress vs. Preferred CFO, Paro, and Zeni.

All four work as fractional CFOs. Only one has the books, the credits, and the model in the same hands.

Capability
FortressPick
Preferred CFO
Paro
Zeni
Tech specialist (not generalist)
Yes
No
Mixed
SaaS only
Bookkeeping + R&D + CFO in one team
Yes
No
No
Software-led
Same person owns model + close
Yes
No
No
No
Engagement model
Direct firm
Direct firm
Marketplace
SaaS platform
Crypto / token treasury experience
Yes
No
No
No
Direct Slack with engagement lead
Yes
Email
Varies
In-app
Pricing
Fixed monthly
Hourly + retainer
Hourly
Tiered SaaS

Comparison based on public pricing pages and engagement structures as of April 2026.

Frequently Asked Questions

The Questions founders actually ask.

Here are some of the frequently asked questions and their best answers for your clarification.

When should I hire a fractional CFO instead of a full-time one?
Below roughly $15M ARR, fractional usually makes more sense. The work is real but doesn’t fill 40 hours a week, and the senior talent at fractional rates is hard to match in a single hire.
A controller owns the close and the books. A fractional CFO owns the model, the board reporting, and the strategic finance work. Most growing startups need both, sequenced.
Most tech-stage engagements run $4K to $12K per month depending on scope and reporting cadence. That’s roughly 15 to 25 percent of a full-time CFO’s loaded cost.

Build and maintain your runway model, run monthly board reporting, manage cash forecasting, prep diligence materials, and coordinate tax planning with your accountant. The work is strategic finance, not bookkeeping.

Most founders benefit from one starting six to nine months before the round. A board-ready model, a clean diligence package, and credible KPI reporting take time to build, and starting them mid-fundraise usually slows the round down.
Yes. A fractional CFO coordinates the §41 R&D credit study, §174A method changes, QSBS qualification, and the §280C(c) election with your tax preparer so the planning is built into the model, not bolted on at year-end.
Preferred CFO ranks well on generic fractional CFO terms but isn’t a tech specialist. Paro is a marketplace that matches you with whichever advisor is available. Zeni is a software platform with bookkeeping and CFO add-ons. Fortress is a tech-specialist firm where the same team handles your books, your R&D credits, and your CFO work. One engagement, not three handoffs.

Still have questions? Contact us.

Book a free consultation.

Let’s figure out what’s working, what’s broken, and what it costs to fix.