The Cross-Border Tax Trap (W-8BEN, W-9, and Protecting Your Royalties)

How international authors can legally stop the US government from withholding 30% of their book earnings.

If you are a non-US author (like our fellow Canadians 🇨🇦, UK writers, or Aussies) publishing your books on Amazon KDP, Apple, or IngramSpark, you are hitting a major cross-border reality: all of these major tech platforms are US-based companies. Because of that, the US Internal Revenue Service (IRS) views your book royalties as income earned on American soil. By default, US law requires these platforms to automatically withhold a massive 30% of your US sales and send it straight to the IRS before your royalty check ever leaves the country.

Imagine making $1,000 USD on a launch, only to have $300 vanished into thin air by Uncle Sam.

The good news? You can legally stop this from happening in about five minutes. It all comes down to understanding tax treaties and submitting the right paperwork. Here is your clear, jargon-free guide to cross-border royalty protection.

Step 1: The Magic of Tax Treaties

The US has official tax treaties with dozens of countries around the world (including Canada, the UK, Australia, and most of Europe). These treaties exist to prevent "double taxation"—meaning you shouldn't have to pay full income tax to the US government and your home government on the exact same book sale.

Under the US-Canada tax treaty, for example, the withholding tax rate on copyright royalties drops from 30% all the way down to 0%.

But Amazon and Apple won't just give you this 0% rate out of the goodness of their hearts. You have to officially claim it using a specific tax form.

Step 2: W-8BEN vs. W-9 (Choose Your Form)

When you set up your publishing accounts, you will be forced to complete an online "Tax Interview." The platform will hand you one of two primary forms based on your citizenship and location.

📄 Form W-8BEN (For Non-US Authors)

If you live outside the United States (in Canada, the UK, etc.) and you do not have a green card or US citizenship, this is your shield.

• What it does: It tells the IRS that you are a foreign resident and that you are officially claiming the tax treaty benefits of your home country.

• The Crucial Step: When filling out the digital W-8BEN inside your KDP dashboard, look for the box that asks for your Foreign Tax Identifying Number (TIN).

  • If you are in Canada, this is simply your 9-digit Social Insurance Number (SIN) (or your Business Number if you are incorporated).

  • If you are in the UK, use your National Insurance Number or UTR.

• The Result: The moment you input your foreign TIN and sign the form, the system matches it against the international treaty database. Your withholding rate instantly drops from 30% to 0%.

📄 Form W-9 (For US Authors Only)

If you are a US citizen or a resident alien living abroad (or a dual US/Canadian citizen), you do not fill out a W-8BEN. You must fill out a W-9.

• What it does: It certifies your US taxpayer status using your Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN).

• The Result: Platforms will withhold 0% for the IRS upfront because they expect you to file and pay your US federal income taxes yourself at the end of the year.

Warning for Dual Citizens: If you hold dual US/Canadian citizenship but live permanently in Canada, you must file a W-9, not a W-8BEN. The US taxes its citizens regardless of where they live globally.

Step 3: Tracking Your Cross-Border Forms at Tax Time

At the start of every calendar year, your US publishing platforms are legally required to send you a summary of exactly what you earned on their US storefronts.

• If you filed a W-8BEN: You will receive a form called a 1042-S. This form shows your total US earnings and should show $0.00 in the "Tax Withheld" column (assuming your treaty rate is 0%). You will use the income listed on this form to report your foreign earnings to your local tax agency (like the CRA in Canada).

• If you filed a W-9: You will receive a standard 1099-MISC or 1099-NEC showing your gross US earnings, which you will use to file your mandatory US tax returns.

Jo and Jodi's Advice

Don't let the scary IRS forms intimidate you into ignoring this! Many new international authors leave their tax interviews incomplete, quietly losing 30% of their hard-earned money every single month without realizing it.

Log into your Amazon KDP, Draft2Digital, and IngramSpark dashboards today. Head straight to the "Account" or "Tax Profile" tab, and make sure your W-8BEN or W-9 is marked as Completed and Approved. It is a tiny structural check that instantly secures your global profit margins so you can keep every single penny your books deserve!