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Introducing COABuilder — AI-powered Chart of Accounts generation for financial professionals.

Build audit-ready COAs in under 20 minutes. A product of AdAstra CFO, live at coabuilder.com.

Try COABuilder Free →
Financial Operations Advisory

Your financial infrastructure
hasn't kept up with
where you're going.

We build what needs to be built. Then make sure it runs.

AdAstra works with growth-stage companies navigating the inflection points that expose gaps in financial infrastructure — a fundraise on the horizon, an ERP that's buckling, a border just crossed, or a close process that's quietly becoming a liability. We diagnose what's actually broken and build the fix.

01 — Core Expertise
Financial Systems & Controls
When the ERP is buckling, the close takes three weeks, or controls haven't kept up with growth — we rebuild the infrastructure from the ground up.
02 — Core Expertise
International Expansion
A new country brings entity structures, transfer pricing obligations, and compliance layers most finance teams aren't equipped for. We build the infrastructure before the exposure compounds.
03 — Core Expertise
Strategic Finance Advisory
Investors are asking questions. The board wants visibility. The numbers exist — but not in a form that drives decisions. We build the frameworks that close that gap.
Controller-Level Depth
ERP & Systems Implementation
Multi-Entity & Cross-Border
Audit & Investor Ready

Not a report.
Not a recommendation.
A built thing.

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Diagnosis before prescription

Every engagement starts with understanding what's actually broken — not what looks broken from the outside. Surface-level fixes aren't how we work.

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Built to outlast the engagement

The deliverable is always something your team can own and operate — systems, models, frameworks, processes. Not a slide deck that gets filed away.

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Controller depth, CFO breadth

Most advisory practices lean one way or the other. AdAstra brings both — the operational fluency to rebuild a broken process and the strategic range to advise a board.

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Engagements with real timelines

We work on defined problems with clear deliverables. Three months minimum — long enough to actually solve something, not just describe it.

How We Engage

From first conversation
to lasting infrastructure.

01

Free Assessment

An honest conversation about your business, your numbers, and where the real friction is. No pitch, no agenda — just a clear-eyed look at what's in the way.

02

Scoped Engagement

A defined engagement with clear deliverables and transparent pricing — whether that's a systems build, a strategic project, or ongoing advisory. No open-ended retainers.

03

Build the Fix

Not a report about what's wrong — the actual solution. Systems rebuilt, processes redesigned, infrastructure stood up. Three months minimum. Long enough to leave something real.

04

Deliver & Hand Off

Everything we build is documented, tested, and handed to your team to own. The engagement ends. The infrastructure doesn't.

Our Expertise

Three disciplines.
One integrated practice.

AdAstra's work sits at the intersection of financial infrastructure, global operations, and strategic decision-making. We don't generalize—we go deep in areas where the complexity is real and the stakes are high.

01

Financial Systems, Process & Controls

Most mid-market companies reach a point where their financial infrastructure stops keeping up. Reporting is fragmented, controls are informal, and the ERP that worked at $10M is buckling at $50M.

We diagnose the gaps and build what's actually needed—from ERP configuration and custom reporting architecture to procure-to-pay process design and internal control frameworks that hold up under audit or investor scrutiny.

ERP ImplementationProcess DesignInternal ControlsCustom ReportingP2P Optimization
02

International Expansion

Crossing a border introduces a new layer of financial complexity—entity structure, intercompany accounting, transfer pricing, multi-currency reporting, and compliance obligations that vary by jurisdiction.

We help finance teams build the infrastructure to manage international operations cleanly from day one, so that expansion doesn't create a compliance backlog or a reporting blind spot.

Entity StructuringTransfer PricingIntercompany AccountingMulti-CurrencyCross-Border Compliance
03

Strategic Finance Advisory

The best financial strategies aren't built in spreadsheets—they're built from a clear understanding of unit economics, cash flow dynamics, and the real levers in your business model.

We work alongside CFOs and leadership teams to build the analytical frameworks, profitability models, and cash visibility tools that support better decisions at every level of the organization.

Profitability ModelingCash Flow ArchitectureUnit EconomicsManagement ReportingBoard Readiness
Live & Functional — coabuilder.com

Build audit-ready Charts of Accounts in under 20 minutes.

AI-powered. Framework-specific. Built by a practitioner.

COABuilder is an AI-powered web application that generates complete, professionally structured charts of accounts for CPAs, controllers, bookkeepers, and fractional CFOs. What used to take 15–20 hours now takes less than 20 minutes—with genuine accounting judgment baked in, not generic output.

Try COABuilder Free →
20 min
From interview to complete, export-ready Chart of Accounts — down from 15–20 hours manually
7 frameworks
US GAAP, IFRS Full, IFRS for SMEs, UK FRS 102, Swiss GAAP FER, Canada ASPE, Tax Basis
5 ERP exports
QuickBooks Online, Xero, Sage 50, FreshBooks, Wave — production-quality, import-ready formats
Two Core Workflows

Built for how financial professionals actually work.

Workflow 01

Build a New COA

For new clients and new engagements. An adaptive interview branches based on your answers — industry, entity type, financing structure, accounting framework, multi-entity complexity. The AI analyzes the full business profile and generates a complete, framework-specific COA ready to edit and export.

→12+ industry categories with subcategories
→14 financing instrument types including SAFEs, convertible notes, venture debt
→Multi-entity structure support — intercompany, consolidation, management fees
→Agency Mode for CPAs and fractional CFOs working on behalf of clients
→Agentic AI follow-up questions before generation
Workflow 02

Audit & Fix an Existing COA

For inherited clients and messy books. Upload an existing COA as a CSV. The tool analyzes it against GAAP best practices for that specific business and returns structured findings — Critical, Warning, and Suggestion — that you can accept, modify, or dismiss. The cleaned COA exports the same day.

→Critical: misclassifications that distort financial statements — auto-corrected on Accept
→Warning: non-standard practices causing reporting confusion or audit exposure
→Suggestion: naming conventions, missing accounts, structural refinements
→Accept, Modify, or Ignore each finding individually
→Export revised COA in target ERP format — same day
Pricing

Start free. Upgrade when you need more.

Free

Starter

$0 / forever
Get started with no commitment. Perfect for evaluating the tool or occasional single-client use.
→Up to 3 COA builds
→Generic CSV export
→Full interview engine
→No AI features
Most Popular

Pro

Coming Soon / per seat
For CPAs, bookkeepers, and fractional CFOs building COAs across multiple clients regularly.
→Unlimited COA builds
→AI-powered generation & follow-up
→COA Audit & Cleanup feature
→All Tier 1 ERP exports — QBO, Xero, Sage, FreshBooks, Wave
→Annual billing option
Enterprise

Firm

Contact Us
For CPA firms and large accounting practices needing multi-seat accounts and white-label options.
→Everything in Pro
→Multi-seat firm accounts
→Direct QBO + Xero API sync
→White-label for firm branding
→Sage Intacct integration
Built by a Practitioner

Not built by developers.
Built by someone who's done the work.

COABuilder was created by Phillip Coomes — a fractional CFO and former controller with 17 years of hands-on finance experience across climate tech, SaaS, multinational corporations, and government. He built the tool because he lived the problem.

That practitioner foundation is what makes COABuilder different. Every framework selection, every account name, every audit finding reflects real accounting judgment — not guesswork, not generic output.

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Framework precision you can trust

US GAAP, IFRS, Swiss GAAP, UK FRS 102 — the output reflects genuine framework conventions, not renamed generic accounts.

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Built for financial professionals

The language, the logic, and the workflows are designed for CPAs, Controllers, and Fractional CFOs and business owners alike.

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A product of AdAstra CFO

COABuilder is one expression of the same expertise AdAstra brings to every client engagement. The tool is fast. The judgment behind it took 17 years to build.

Phillip Coomes, Managing Partner
17+
Years in Industry
3
Core Practice Areas
$0
Cost to Assess
1
Senior Point of Contact
About AdAstra

Phillip Coomes, MBA
Founder & Managing Partner

AdAstra was founded on a simple observation: most growth-stage companies don't need more financial reporting — they need someone to fix what's actually broken. That means rebuilding the ERP that's buckling under scale, designing the close process that's eating three weeks every month, or standing up the financial infrastructure a new country requires. The practice was built to do that work, not describe it.

Phillip brings 17+ years of progressive finance and accounting leadership across Fortune 500 logistics, NATO infrastructure, SaaS revenue accounting, and climate technology. As Finance Controller and Acting Regional CFO for Climeworks North America, he oversaw the financial infrastructure for Project Cypress — a first-of-its-kind direct air capture facility with budgeted expenditures exceeding $1.2 billion. Before that, he designed and implemented the complete financial operations stack for Breakthrough Energy, the climate technology network founded by Bill Gates.

Phillip is also the founder of COABuilder — an AI-powered Chart of Accounts tool built from real accounting practice and used by CPAs, controllers, and fractional CFOs across the US and internationally.

→MBA, Finance — University of Washington Foster School of Business
→Internal Audit — Expeditors International (Fortune 500), 22 international subsidiaries
→FP&A — NATO Infrastructure, $500M+ annual expenditure oversight
→U.S. Marine Corps — Staff Sergeant, Embassy Security, Top Secret/SCI clearance
Get Started

The iceberg is closer
than it looks.
Let's talk.

Most companies that work with AdAstra didn't know exactly what they needed when they first reached out. They knew something was wrong — a close taking too long, a fundraise approaching with financials that weren't ready, a system that had stopped keeping up. The conversation started there. It can start the same way here.

→Scaling internationally and need the infrastructure to match
→Preparing for a fundraise and need audit-ready financials
→Systems and controls that haven't kept pace with growth
→A close process, ERP, or reporting stack that needs rebuilding

Request Your Free Assessment

Tell us where you are. We'll tell you honestly how we can help — and whether we're the right fit.