SPAC accounting, bill pay, and SEC filings. Handled.

Arthur Financial Advisory runs the entire back office for SPACs — monthly close, vendor payments, and auditor-ready 10-Qs and 10-Ks — and coordinates your auditors, counsel, and EDGAR agent so filings go out on time, every time.

Book a call before your next filing →

Senior CPA-led. Fixed fees. We are not your auditor — we're the ones who make your audit easy.

CPA firm · SEC reporting specialists · Works alongside Withum, CBIZ Marcum & other SPAC auditors · U.S. & Cayman-domiciled SPACs

Your SPAC has filings due and no finance department.

A SPAC is a public company with no employees. The 10-Q is due 45 days after quarter-end whether or not anyone is watching the books. Your auditor is not allowed to prepare the financials they audit. And your CFO has a day job — usually running the sponsor.

So the real question every sponsor faces: who actually does the work? Who accrues the D&O premium, pays the vendors, drafts the footnotes, answers the auditor, and gets the XBRL to the filing agent on time?

That's the entire job we built this practice to do.

What's included: the full back office

Every month

Full monthly close
Accruals: D&O, taxes, admin fees
Vendor bill pay — approved by you, executed by us
A one-page monthly summary for the sponsor team

Every filing

Complete 10-Q and 10-K drafts — statements, footnotes, EPS, MD&A
Warrant and Class A share classification kept current (ASC 815 / ASC 480)
Audit and review support: every PBC schedule, before they ask
XBRL review and EDGAR agent coordination
One filing calendar, run by us

Also available: IPO ramp-up (policies, opening balance sheet, instrument classification memos) · extension votes and redemption math · de-SPAC and Super 8-K support · wind-down and dissolution accounting

Our Filing Cycle — how a SPAC never misses

The Instrument File — warrants and Class A shares classified at inception and re-checked quarterly. No restatement surprises.
The Quarterly Draft — an auditor-ready 10-Q, delivered to an internal deadline set well before the SEC's.
The PBC Shelf — everything your auditor needs, ready before they ask. Reviews that take days, not weeks.
The Filing Desk — one coordinator for auditor, counsel, XBRL, and EDGAR agent. You get one email: "Filed."

Fixed fees. Sponsor-friendly. In writing.

A flat monthly retainer for the accounting and bill pay. A fixed fee per 10-Q and per 10-K. A one-time setup fee at IPO. De-SPAC support scoped separately, and preferred pricing for multi-SPAC sponsors from your second vehicle onward.

We know working capital is your at-risk money — our fees are built for a no-employee registrant, not a Fortune 500 reporting department. See current rates on our Services & Pricing page, and we'll confirm your exact quote in writing after a brief engagement-scoping call — so it reflects your SPAC's instrument mix and filing calendar before you commit to anything.

Why sponsors choose Arthur Financial Advisory

A senior CPA, not a ticket queue. The person who closes your books is the person who drafts your 10-Q — a senior CPA who answers the phone during filing week.

Built to work with your auditor. We're independent of your audit firm by design. Clean PBC packages, on-time drafts, no games — auditors finish faster, and their bill shows it.

One desk for the whole filing. Auditor, counsel, XBRL, EDGAR agent — we run the calendar and the handoffs. Your sponsor team stays focused on the deal.

Frequently asked questions

Are you our auditor? No — and that's the point. SEC independence rules bar your audit firm from preparing the financials it audits. We prepare; they audit. Every SPAC needs both.

Who actually files with EDGAR? Your EDGAR filing agent transmits the filing. We prepare the document, review the XBRL tagging, run the calendar, and coordinate the agent so the filing lands on time.

Can you take over mid-stream? Yes — mid-quarter transitions are common. We onboard from your current provider or sponsor records and take the next filing.

Do you handle Cayman-domiciled SPACs? Yes. The reporting obligations are the same U.S. SEC filings; we stay current on the domicile-driven nuances, including the excise-tax landscape.

What about our extension vote or redemption? We handle the redemption math, trust movements, and updated disclosures, and support counsel on the proxy.

What happens at de-SPAC? We support the S-4/proxy financials and the Super 8-K, then either transition the books to the operating company's team — or continue as its reporting group. Either way, nothing is lost in the handoff.

How fast can you start? Setup typically takes 1–2 weeks from engagement letter: access, trust statements, instrument documents, and the filing calendar. If you have a filing inside 30 days, say so on the call — we'll tell you honestly whether it's makeable.

Do you also work with our target after the deal? Yes — post-merger operating companies need exactly the monthly close and reporting discipline we already run. Many engagements continue straight through.

Your next 10-Q is closer than it looks.

A 30-minute call: where your books stand, what your filing calendar looks like, and a written fixed-fee quote for the whole engagement. If we're not the right fit, we'll tell you who is.