What Counts as Deductible Travel
If you write a Substack and file taxes as a self-employed business owner, travel that serves your newsletter is deductible on Schedule C. This includes trips to report a story, interview a source in person, attend a writers conference, visit a publishing or media event, or scout locations for content you plan to write about. The trip has to have a clear business reason, not just a vague hope that something might inspire a post.
Deductible travel costs include airfare, train or bus tickets, hotel stays, rental cars, taxis and rideshares, baggage fees, and 50 percent of meals while traveling for business. If you drive your own car for business errands, like driving to a coffee shop interview or the post office to mail merch, you can use the IRS standard mileage rate instead of tracking actual gas and repair costs. Choose one method and keep a mileage log with dates, destinations, and purpose.
Mixing Business and Personal Trips
A lot of writers combine research trips with vacations, and the IRS allows this, but only the business portion is deductible. If you fly to another city for a five day trip and spend two days meeting sources or attending an industry event, you can generally deduct the airfare in full (since the primary purpose was business) plus the hotel and meal costs for the two business days. The personal days are not deductible. Keep a day-by-day itinerary showing which days were business and which were leisure, because this is exactly what an IRS agent asks for if you're ever reviewed.
Documentation That Actually Holds Up
The IRS requires more than a stack of receipts. For every trip you deduct, keep:
- The business purpose (an interview, a conference, research for a specific piece)
- Dates of travel
- Amounts spent, broken down by category (lodging, transportation, meals)
- Receipts or bank/credit card statements showing the charges
A simple habit that saves headaches later: right after a trip, write a one paragraph note in your phone or a spreadsheet describing what you did and why it was for your Substack. This turns a pile of receipts into an audit-proof record with almost no extra effort.
Where This Goes on Your Tax Return
Travel expenses get reported on Schedule C, the form self-employed writers use to report income and expenses from their Substack. Travel usually falls under "Travel" (line 24a) and meals under "Meals" (line 24b, limited to 50 percent). These deductions reduce your net profit, which also lowers the self-employment tax you calculate on Schedule SE, so tracking travel accurately can meaningfully cut what you owe.
If your Substack income comes through Stripe, Substack's own payment processing, or a mix of subscriber payments and paid speaking gigs, you may get a 1099-K or 1099-NEC reporting gross income. Travel write-offs are one of the main ways to bring your taxable income down to what you actually kept, so it's worth tracking every trip, even short local ones for a single interview, rather than only remembering the big conference flights at year end.