The disputes online sellers run into, and the paperwork that helps
Selling online means someone else usually decides your disputes. Buyers can claim non-delivery months later, custom clients can cancel after you’ve bought materials, competitors can copy your bestseller down to the photos, and platforms rule on whatever records exist. Card networks, marketplace trust teams and small claims judges all start with the same question: what did the seller disclose, and what can they prove? Written policies and good records are how you answer it.
- Your policies are your side of the story, written in advance. Processing times, shipping methods, return windows and custom order rules, posted before purchase, are what chargeback reviewers and platform mediators read. A vague shop has little to point to in a close call; a specific one has its terms in writing.
- Put custom work in a signed agreement. A deposit that covers materials, a design-approval stage with sign-off, and a clearly marked point of no return (“once production begins…”) give you a clear answer when a buyer wants to cancel after you have started.
- Answer copycats with a takedown notice. A DMCA takedown notice is a specific letter with specific statutory elements. It is how you ask marketplaces and hosts to remove copied photos and designs, and you can send one without a lawyer.
- Keep evidence on every order. Photograph each order before packing, keep tracking on everything, and save platform messages. It takes about thirty seconds an order, and it is what you will rely on if a dispute comes later.
Do marketplace sellers need their own policies?
Yes. The platform’s rules set the minimum, but your shop policies fill the gaps platforms leave to you (processing times, customs, personalization rules) and come with you when you open your own site. The pack writes them with your platform in mind.
How sales tax works for online sellers
Marketplaces (Etsy, Amazon, eBay) are required to collect and remit sales tax for you in essentially every state with a sales tax. When you sell on your own site, you owe tax where you have “nexus”: your home state, and other states only once you pass their thresholds (commonly $100,000 in sales). The playbook covers the basics and when to bring in an accountant.
Online Seller Pack provides self-help templates and general information. It is not legal or tax advice, it is not a law firm, and it is not a substitute for the advice of an attorney. Platform rules, tax thresholds and consumer laws vary and change, so check the current requirements. Facts verified July 2026.