PE Portfolio Company Accounting & Controller Services

Week one post-close.
We're already on it.

When a private equity firm acquires a new portfolio company, the accounting is usually a mess. Borgg deploys Ex-Big 4 CPAs within days of close — handling interim controller support, Opening Balance Sheet (OBS) procedures, purchase price accounting (ASC 805), and the full financial infrastructure your portco needs from day one.

30d
Days to board-ready
financials post-close
15+
Acquisitions supported
last 12 months
PE Firms & Clients Served
Stripe
Lemon Squeezy
Herringbone Digital
Supreme Group
Trinity Hunt Partners
ReadMe.io
Stripe
Lemon Squeezy
Herringbone Digital
Supreme Group
Trinity Hunt Partners
ReadMe.io

The accounting firm PE firms call the day the deal closes

PE operating partners and CFOs call Borgg when a newly acquired portfolio company needs immediate accounting support. We close the gap between close date and board-ready financials — fast, without the ramp-up of a full-time hire.

Talk to Trevor
01

Post-Acquisition Interim Controller Support

You just closed. The portco's books are a mess and the board wants answers by next month. We deploy Ex-Big 4 CPAs within days — assessing the damage, prioritizing missing financials, and standing up the accounting function immediately.

02

Opening Balance Sheet & Purchase Price Accounting

ASC 805 purchase price allocations, opening balance sheet preparation, fair value adjustments — handled precisely by CPAs who have completed these procedures dozens of times in PE environments.

03

PE Roll-Up Financial Integration

Standardized chart of accounts, consolidated multi-entity reporting, and a scalable financial spine across your entire portfolio — from first acquisition through platform scale.

04

Audit Readiness & Pre-Exit Financial Prep

Diligence surprises kill deals. We get your portfolio company GAAP-compliant, audit-ready, and positioned for the cleanest possible exit or next capital raise.

Outcomes that moved the needle

Payments · M&A Exit
Lemon Squeezy
Payments Infrastructure

Built full accounting infrastructure and acquisition data room from scratch — enabling a landmark exit just 18 months after first customer.

$40M
Acquired by Stripe

What PE-backed CFOs say

"We were under pressure to deliver. No margin for delay, no room for mistakes. Borgg came in with the speed, trust, and precision we needed to get it right. Borgg completely rebuilt the way we operate. I trusted Trevor and his team to handle things I'd normally reserve for an internal team, and he delivered every time."
Michael Lucente — CFO, Herringbone Digital · Trinity Hunt Partners Portfolio Company

Outsourced accounting for PE-backed companies

Every engagement is personally led by a CPA with Ex-Big 4 PE transaction experience. From day-one triage through audit-ready reporting, we act as your embedded accounting team — not a vendor.

01

Interim Controller & Fractional CFO

Monthly close management, board-ready financial reporting, and hands-on financial leadership from day one of acquisition — without the cost or ramp-up of a full-time hire.

02

Opening Balance Sheet & PPA (ASC 805)

Purchase price allocations, opening balance sheet preparation, fair value adjustments, and goodwill calculations — handled with Big 4 precision post-close.

03

Audit Readiness & Audit Support

We prepare your portfolio company for audit, manage the auditor relationship, and ensure GAAP-compliant financials pass without surprises or rework.

04

Technical Accounting

ASC 606 revenue recognition, ASC 842 lease accounting, cash-to-GAAP conversions, and complex equity transactions handled by CPAs with deep technical backgrounds.

05

Accounting Systems Implementation

QuickBooks Online, Rillet, Ramp — fully implemented and configured for PE board reporting requirements from the first day of engagement.

06

Consolidated Multi-Entity Reporting

Board packs, KPI dashboards, and investor-grade reporting packages across multiple portfolio entities — delivered on schedule, every single month.

Ex-Big 4 PE accounting experience.
Boutique firm pricing.

PE-backed portfolio companies are chronically underserved by the accounting market. Big 4 talent stays at Big 4. Regional firms lack the specialized private equity accounting experience your portcos need immediately after close.

Borgg was founded in 2021 to bridge that gap — bringing public company-grade accounting infrastructure to PE-backed companies at the speed and price point the market was missing.

Ex-Ernst & Young Strategy & Transactions (M&A)
California CPA License #138353
10+ PE acquisitions supported in past 12 months
13-person team — US controllers + offshore senior staff
Trevor McGuire CPA, Founder of Borgg LLC — Private Equity Accounting
Trevor McGuire, CPA
Founder & Managing Partner
Ernst & Young
KPMG
Stripe
Lemon Squeezy
Coalesce
Supreme Group
Herringbone

What PE firms ask us about portfolio company accounting

Answers to the most common questions from private equity operating partners, deal teams, and portfolio company CFOs.

What accounting support do PE firms need immediately after an acquisition?

Most PE acquisitions require immediate interim controller support, opening balance sheet preparation, purchase price accounting under ASC 805, and a clean-up of the acquired company's books. Borgg deploys within days of close to handle all of this — giving the board accurate financials and the portco a scalable accounting foundation.

What is an opening balance sheet in a private equity acquisition?

An opening balance sheet (OBS) is the first GAAP-compliant balance sheet established after acquisition close. It incorporates purchase price allocations, fair value adjustments to assets and liabilities under ASC 805, and establishes the accounting baseline for the portfolio company going forward. This is one of Borgg's core post-close deliverables.

How is Borgg different from Accordion or larger PE accounting firms?

Accordion and similar firms are large consulting organizations with significant overhead and enterprise pricing. Borgg is a boutique firm led by an Ex-Big 4 CPA who personally runs every engagement. You get the same quality of PE accounting expertise — at a fraction of the cost, with a direct line to the person actually doing the work.

How quickly can Borgg deploy post-acquisition?

Borgg typically deploys within days of engagement. In the Herringbone Digital engagement, we were fully embedded within 10 days of the CFO's arrival and delivered board-ready financials within 60 days — despite inheriting four months of missing financial records and mid-migration accounting systems.

Does Borgg support PE roll-up strategies?

Yes. We specialize in building the financial infrastructure that supports roll-up strategies — standardized chart of accounts, multi-entity consolidation, and reporting frameworks that scale cleanly from one acquisition to twenty-five. Each add-on integrates into the same financial system rather than creating a new silo.

What does outsourced PE portfolio company accounting cost?

Borgg uses flexible retainer-based pricing with no hidden fees. We offer a free, no-obligation audit before any engagement to assess the portco's needs and provide an all-in estimate. We typically start engagements on an hourly arrangement, then transition into a fixed monthly retainer once the scope is well-defined — no surprise invoices.

Get Started

Week one starts the moment
you make the call.

Free, no-obligation audit for PE firms and portfolio companies. We assess your accounting needs and give you an all-in estimate — no surprises, no pitch.

Book a Free Audit trevor@borggllc.com
Free assessment · No obligation · PE firms & portcos only · Response within 24 hours