Not sure if you can write that off? ← yes you can (probably) ↙

Type what you spent. The AI cites the IRS section, tells you the deductible percentage, and explains it like a friend who actually read the tax code. Built for solo founders and freelancers with an LLC.

Download for iOS See how it works ↓

Deductible 100% §162 Approved

What your dashboard looks like

Every expense reviewed.
Nothing left to guess.

WRITEOFF

Your Business · LLC
May 2026

Claude Max sub$200.00§162 ✓

Anthropic API$47.82

Vercel Pro$20.00

Namecheap renewal$38.88

Client lunch (Nobu)$184.5050% only! §274(n)

Cursor Pro$20.00

Supabase Pro$25.00

Solo lunch (personal)$16.50

TOTAL TRACKED$552.70

DEDUCTIBLE$443.95

THANK YOU FOR BEING
RESPONSIBLE WITH YOUR TAXES

Not a CPA · Confirm with your tax professional

↑ AI highlighted these — they need context The 50% is because IRS caps meal deductions (§274) Crossed out = personal. Won't show on your tax report.

Instructions · Schedule WO

Three steps. Fifteen seconds.

Type what you spent

Natural language. No forms, no dropdowns, no picking from 200 categories.

anthropic api $47.82

AI reviews it

Cites the IRS section, asks 1-2 questions if needed, determines the deductible percentage.

"Deductible under §162 as an ordinary business expense."

Export at tax time

One-tap PDF grouped by category. Hand it to your CPA. Save hours of prep.

→ WriteOff-TaxReport-2026.pdf

Schedule C · Line Items

Categories that match how you actually spend.

Category	Example	IRS Ref
AI Subscriptions	Claude Max, Cursor, Midjourney	§162
API Credits	Anthropic, OpenAI, Replicate	§162
Cloud & Hosting	Vercel, AWS, Railway, Supabase	§162
SaaS Tools	Linear, Notion, Figma, Slack	§162
Domains	Namecheap, Porkbun, Cloudflare	§162
Hardware	MacBook, monitor, keyboard	§179
Meals & Client	Client lunches, prospect coffees	§274(n) · 50%
Travel	Flights, hotels, Uber to conf	§162(a)(2)
Education	Courses, books, workshops	§162

Bring your own API key.

WriteOff uses your Anthropic or OpenAI key directly. No middleman, no markup, no subscription. Each AI review costs a fraction of a cent. Your data goes straight to your provider.

Anthropic (Claude)

OpenAI (GPT)

← costs ~$0.01 per review 🤯

Stop guessing.
Start writing off.

Track everything. We'll tell you what's deductible.

Free. Seriously.

Download for iOS