What Are 9 Deductible Expenses New Founders Miss in Year One?
Your most expensive year-one mistake isn’t pricing or product — it’s letting ordinary receipts die undocumented. These 9 deductions + a simple proof routine fix that.
Summary of What This Blog Covers
- Nine first-year write-offs new founders skip
- Qualifying rules + audit-ready proof
- A month-end routine that makes documentation automatic
1. Pre-Opening Costs
Market research, branding tests, legal formation, early site copy, initial ad buys — deduct allowed portion immediately, amortize rest.
2. Subscriptions (Prepaids)
Annual plans paid early — 12-month rule lets you deduct this year.
3. Merchant & Payment Fees
Stripe, PayPal, Square fees — 100% deductible as ordinary expense.
4. Mileage & Vehicle
Standard rate or actual — log every business mile with purpose + odometer.
5. Partial-Month Rent/Utilities
Mid-month move-in? Prorate and deduct the business portion from day one.
6. Training & Education
Courses, conferences, certifications that maintain/improve skills — deductible if business-related.
7. Phone & Internet Allocation
Reasonable business % (logs + purpose) — 40–70% common and defensible.
8. Small Tools & Supplies
Under de minimis threshold ($2,500/item) — expense immediately with policy.
9. Launch Ads & Testing
Pre-launch ads, A/B tests, landing-page spend — ordinary startup or marketing.
Month-End Documentation Routine
10 min receipts → tag + note purpose
10 min mileage log export
10 min prepaid list update
5 min projection check
Year-One Deduction Checklist (copy-paste)
Pre-opening list + total
Subscription prepaid schedule
Merchant fee reports
Mileage log complete
Rent/utility proration memo
Training receipts + purpose
Phone/internet % method
De minimis policy + list
Launch ad summary
Book Your Year-One Review
Insogna reviews your receipts, captures every missed deduction, builds your month-end routine, and hands you an audit-ready packet. Whether you searched “tax preparation services near me,” “Austin tax prep,” or “best tax accountant Austin,” we turn year-one chaos into real savings.
Frequently Asked Questions
1) What proof do I really need?
Receipt + short business-purpose note. Date, amount, vendor, why.
2) Can I deduct coffee-shop Wi-Fi days?
Yes — but home office + allocated internet is usually larger and cleaner.
3) Pre-launch ads — startup or marketing?
Pre-launch = startup costs. Post-launch = ordinary marketing.
4) How much phone/internet % is safe?
Document your method (logs). 40–70% common. Round down if unsure.
5) When to bring in a pro?
Before filing — especially if pre-opening costs or de minimis policy need setup.
