Startup tax.Startup speed.

Tax & books, handled end-to-end. AI agents do the work; a licensed CPA makes the call, in hours, not weeks.

The Acorn 9 Collect dashboard: client document intake, organized and tracked in one place.
Why Acorn 9

The busywork, automated.
The judgment, human.

Every founder needs two things: speed, and someone who actually makes the call. You get both, so the decisions that move money get made right, in hours.

01 · You stay focused on building

The busywork never lands on you.

Receipts, reconciliations, deadlines: AI agents handle all of it in the background. You spend zero hours on tax admin, and nothing slips through the cracks.

See what runs itself
Agents · always-on
Organized & reconciled 142 documentsauto
Drafted return & cross-checked rules24/7
Tracking 6 filing deadlinesalways
Flagged 1 cross-border risk earlyrisk
02 · The big calls, made right

Clear answers on what moves real money.

QSBS, entity choice, cross-border: a licensed CPA reads your whole picture and gives you a clear call in hours, not weeks. Reviewed and signed, personally.

Talk to your CPA
Your structure, mapped
You · Founder
LLC A
Property LLC
C-corp · QSBS
Overseas parent
Replied in 3 hours, not 3 weeks, and knew which entity reports what.
03 · Money that compounds

Savings that stack, year over year.

We plan all year, not just in April, so QSBS, multi-entity and cross-border savings compound instead of slipping away. That's real runway back in the business.

See what we handle
$0
Est. savings, compounding
2024 → 2034
A traditional firm reacts in April. We plan year-round, so the savings stack instead of slipping away.
The Acorn way vs. the old way

The old way breaks when tax
stops being standard.

acorn9
Traditional CPA
A licensed CPA makes the actual decision
Replies in hours, not weeks
AI agents track every deadline, 24/7
Flags risks early, before they cost you
Cross-border & multi-entity as core work
One place for books, filings & decisions
Who we work with

Founders come in different shapes.

So do the entities around them. Many sit across two. Book one call and we'll sort the structure with you.

01

Startup Founders

“I already researched it. I need a real answer.”

Delaware C-corpQSBS · §120283(b)SAFE
Founder tax help
02

Business Owners

“Tax questions that don’t fit standard software.”

LLC / S-corpOwner compBookkeeping handoff1099s
Owner tax help
03

Mortgage + LLC + Property

“Where personal and business facts overlap.”

Multiple LLCsRefi pendingInvestment propertyLender-ready
Complex personal cases
04

Cross-Border Brands

“Asia → U.S., coordinated as one picture.”

U.S. entitySales taxPayrollOverseas parent
Cross-border support
Everything we handle

Tax & books, handled
all year, not just April.

From incorporation to year-end filing, six lines of work each run on a clear schedule, so you always know what's done, what's due, and exactly what you get.

Day 0 · Set upMonthly · BooksQuarterly · StrategyYear-end · Filed & signed
01
Day 0 · Once

Set up right, so nothing haunts you later.

  • Delaware C-corp / LLC formation
  • Founder stock + 83(b) elections
  • EIN · cap table · QSBS set-up
You getSS-483(b)Form 2553Cap table
02
Monthly

Books you can hand to anyone, any time.

  • QuickBooks / Xero set-up & clean-up
  • Monthly close · bank & card recon
  • Accruals, deferred revenue, 1099s
You getMonthly closeClean GL1099s
03
Multi-state

Know exactly where you owe, across 50 states.

  • Nexus study across 50 states
  • State registration & permits
  • Monthly / quarterly ST filings
You getNexus studyRegistrationsST returns
04
By the 10th

Reports your investors actually trust.

  • Investor P&L & balance sheet
  • Runway & burn-rate forecast
  • Board / KPI pack, every month
You getInvestor P&LForecastKPI pack
05
Quarterly

Decisions made before year-end, not after.

  • Federal & state estimated payments
  • Founder comp & owner-comp strategy
  • QSBS §1202 · residency moves
You getEstimatesComp strategyQSBS plan
06
Annual · signed

Filed, signed, and stood behind.

  • Federal 1120 / 1120-S / 1065
  • Multi-state corporate returns
  • 5471 · 5472 · FBAR · K-1s
You get1120 / 10655471 / 5472FBAR · K-1
The complex filings

Standard software quietly skips these.

These aren't just forms. They're where a complex case gets expensive. We file them every week.

Cross-border that bites

54715472FBARFATCA

Miss one and it's $10K–$25K, automatic, and it stacks every year nobody filed.

Founder & equity

83(b)QSBS §1202SAFENotes

The timing window matters: once it closes, the treatment is often irreversible.

Multi-state reality

NexusSales taxApportionmentVDA

Every new state you touch is another rulebook: Wayfair, registration, ongoing filings.

Behind on filings?

Every day late
has a price tag.

Late penalties are mostly flat. They accrue whether or not a CPA is looking. These are real, and they stack.

Get on the priority list
FORM 5472
$0
per missed filing · automatic

Foreign-owned U.S. entity that didn't file. Each year is another $25K.

FORM 5471
$0
per year · per entity

U.S. person with foreign-company ownership and no information return.

FBAR
$0+
non-willful · per violation

Foreign accounts over $10K not reported on FinCEN 114.

LATE FILING
0%/mo
capped at 25% of tax due

Plus failure-to-pay, plus interest. The total stacks quickly.

Most cases turned around in 5–10 days once we have your documents.

In their words

What founders say after
the first call.

Real client feedback, each paired with the outcome we delivered.

They'd read everything before our first call. I didn't have to explain my cap table twice, and they kept my QSBS intact straight through the move.

$2M+QSBS preserved · SF → Austin
Daniel L.
Daniel L.
SaaS Founder

Three LLCs and two mortgages. I couldn't tell which entity reported what. They mapped the whole structure for me and got it lender-ready.

On time3 entities mapped · lender-ready
Mona C.
Mona C.
Property Investor

Nobody owned sales tax, payroll, or the overseas parent. They took the whole picture. Now the U.S. tax side just runs while we open stores.

5 statesNexus cleaned up · cross-border
Jasmine W.
Jasmine W.
F&B Brand Founder
Book a call

Bring us the complicated parts.

15 minutes with a licensed CPA. No sales pitch, just straight answers on the entities, deadlines, and decisions other firms punt on.

1
Tell us what's on your mind
Entities, deadlines, the actual question. Whatever you have is enough to start.
2
We reply within 1 business day
You'll get a private, encrypted folder for documents and questions.
3
We come prepared
Agents prep your file. Your CPA shows up ready to decide, not to stall.
A licensed CPA reads your file before the call, reviewed beforehand, not during.
Tell us about your situation
The more context up front, the better the first call.
Tax filingBookkeepingMulti-stateCross-borderBehind on filingsOther
We reply within 1 business day · your details stay private.

Thanks, we've got it.

A licensed CPA will reply within 1 business day with your private folder and next steps.