Amazon withholds tax from KDP royalties by default unless you complete the tax interview in your KDP account. For authors outside the US, getting this right can be the difference between receiving your full royalty and losing 30% to automatic withholding. This guide covers KDP’s tax interview, W-8 and W-9 forms, treaty benefits, and how royalty income is treated for tax purposes in the UK, US, and beyond.
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This article provides general information about KDP’s tax processes and is not tax advice. Tax law varies by country and individual circumstance. For advice specific to your situation, consult a qualified tax professional or accountant in your jurisdiction.
KDP royalties are income, and income is taxable. This is straightforward in principle and complicated in practice, for two reasons. First, Amazon is a US company, which means it operates under US tax rules even when paying authors in the UK, Australia, Canada, or elsewhere — creating a withholding obligation that affects non-US authors unless they take specific steps to reduce or eliminate it. Second, the way royalty income is categorised for tax purposes — and what expenses can be offset against it — varies significantly by country and by whether you’re publishing as an individual or through a business entity.
The good news is that for most KDP authors, the tax picture is more manageable than it first appears. Amazon’s tax interview process is designed to collect the information needed to apply treaty rates and reduce withholding, and completing it correctly is a one-time task (updated when your circumstances change) rather than an ongoing administrative burden.
The KDP Tax Interview: What It Is and Why It Matters
Every KDP account is required to complete a tax interview — a questionnaire within your KDP account that establishes your tax status, collects the relevant form information, and determines what withholding rate applies to your royalties. The interview is accessed through your KDP account at kdp.amazon.com under Account → Tax Information.
If you don’t complete the tax interview, Amazon applies a default withholding rate of 30% to all US-source royalties — meaning 30% of every royalty payment from US sales is withheld and remitted to the US Internal Revenue Service. For authors whose country has a tax treaty with the United States that covers royalty income, the treaty rate is typically lower — often 0% for UK authors, 0–15% for authors in other treaty countries. Completing the tax interview and claiming the applicable treaty benefit is the mechanism that reduces your withholding from 30% to the treaty rate.
The interview collects different information depending on whether you are a US person (US citizen, US resident, or US entity) or a non-US person. US authors complete a W-9 form equivalent within the interview, confirming their US taxpayer status and providing their Social Security Number or Employer Identification Number. Non-US authors complete a W-8BEN (for individuals) or W-8BEN-E (for entities) form equivalent, claiming their country of residence and, where applicable, their treaty benefits.
UK Authors: What the US-UK Tax Treaty Means for Your Royalties
The United States and United Kingdom have a tax treaty that covers royalty income. Under Article 12 of the US-UK tax treaty, royalties paid to a UK resident are taxed only in the UK — the US withholding rate on royalties paid to UK residents who have claimed the treaty benefit is 0%. This means UK authors who complete the KDP tax interview correctly, confirm their UK residence, and claim the treaty benefit should have 0% withheld from their US-source KDP royalties.
To claim this benefit during the KDP tax interview, you’ll need to confirm that you are a UK resident (not a US citizen or US resident), provide your UK address, and identify the treaty article (Article 12 of the US-UK treaty for royalties). The interview walks you through this process — it’s a form completion exercise rather than a complex calculation. Once submitted, Amazon applies the 0% rate to your US-source royalties going forward.
UK authors then declare their KDP royalty income to HMRC as self-employment income (if publishing as a sole trader) or as trading income (if publishing through a limited company). The US withholding position doesn’t eliminate the UK tax obligation — it prevents double taxation, so the income is taxed once in the UK rather than being taxed first in the US and then again in the UK.
US Authors: Self-Employment Tax and Schedule C
US authors publishing on KDP receive a 1099-MISC or 1099-NEC from Amazon at the end of the tax year if their royalties exceed the reporting threshold ($10 in royalties and $600 in other income as of current rules). KDP royalty income is reported on Schedule C (Profit or Loss from Business) as self-employment income for most individual authors.
Self-employment income is subject to both income tax at your marginal rate and self-employment tax (the self-employed equivalent of Social Security and Medicare contributions), currently 15.3% on net self-employment income up to the Social Security wage base, and 2.9% above it. The self-employment tax applies to net income — royalties minus deductible business expenses — which makes the business expense deduction question practically important for US authors with meaningful KDP income.
US authors with consistent self-employment income from KDP may be required to make quarterly estimated tax payments to avoid underpayment penalties at year end. The IRS guidance on self-employment tax and estimated payments at irs.gov covers the calculation methodology and payment schedule.
Deductible Business Expenses for KDP Authors
In most jurisdictions, expenses incurred wholly and exclusively for the purpose of your KDP publishing business are deductible against your royalty income for tax purposes. The specific rules vary by country and entity structure, but the categories of expense that are commonly deductible for self-published authors include: professional editing and proofreading fees; cover design costs; formatting tool subscriptions (Vellum, Atticus, or equivalent); keyword research and publishing tool subscriptions (including KDP Rank Fuel); Amazon Ads spend; author website hosting and domain costs; ISBN purchases; review copies and advance reader copy distribution costs; professional development costs such as writing courses and publishing conferences; and a proportion of home office costs if you work from home.
Keeping clear records of all publishing-related expenses — with receipts and clear categorisation — is the operational habit that makes these deductions claimable without stress at year end. A simple spreadsheet with date, description, amount, and category is sufficient for most sole trader authors. Authors with more complex publishing operations — multiple pen names, publishing through a company, significant advertising spend — benefit from accounting software or a bookkeeper.
Professional Production Is a Deductible Business Expense.
Manuscript proofreading is a legitimate publishing business expense in most jurisdictions — deductible against your KDP royalty income when incurred for books you’re publishing commercially. Vappingo’s proofreading service improves your book’s quality, its review performance, and your long-term royalty income, all while being a recordable business cost.
Authors in Other Countries: Treaty Rates and Withholding
Authors in countries that have a tax treaty with the United States covering royalty income should check the applicable treaty rate for their country. The US has treaties with most major English-speaking and European publishing markets — Australia, Canada, Ireland, Germany, France, the Netherlands, and many others. Treaty rates on royalties typically range from 0% to 15%, depending on the specific treaty terms.
Authors in countries without a US tax treaty — or in countries where the treaty doesn’t cover royalty income — face the default 30% withholding rate. In these cases, depending on your country’s domestic tax rules, you may be able to claim a foreign tax credit for the US tax withheld, reducing your domestic tax liability by the amount already paid to the US. This prevents full double taxation but requires the foreign tax credit claim to be made correctly on your domestic return.
The IRS maintains a treaty table at irs.gov listing all current US tax treaties and the applicable rates for different income types, including royalties. This is the authoritative source for treaty rate information and should be consulted before completing the KDP tax interview to ensure you’re claiming the correct rate for your country.
Keeping Your Tax Interview Current
The KDP tax interview is not a one-time permanent submission — it needs to be updated when your circumstances change. If you move to a different country, your treaty position changes. If you shift from publishing as an individual to publishing through a company or LLC, the form type changes from W-8BEN to W-8BEN-E. If your existing tax interview submission expires (W-8 forms are valid for three years and expire at year end of the third year), Amazon will revert to default withholding until a new interview is completed.
KDP sends email notifications when your tax interview is approaching expiration. Acting on these promptly rather than allowing the interview to lapse — and the withholding rate to revert to 30% while you’re earning — is a simple operational habit that protects your royalty income. Check your KDP account’s Tax Information section annually as part of your year-end publishing review, even if you haven’t received a notification. The KDP Royalty Report guide covers how to read your earnings data and identify any unexpected withholding in your payment history. The Building a KDP Publishing Business guide covers the broader operational and financial structure of treating KDP publishing as a professional business activity.
VAT and Sales Tax: The Author’s Position
VAT (in the UK and EU) and sales tax (in the US) on ebook sales is generally collected and remitted by Amazon directly, not by the author. When a reader in the UK buys your Kindle book, Amazon charges and accounts for UK VAT on that transaction — this is not your VAT to register for, collect, or remit. The royalty you receive is calculated after Amazon has handled the VAT element. This means most KDP authors with royalty income below their country’s VAT registration threshold have no VAT obligation arising specifically from their Amazon ebook sales.
The position becomes more complex for authors who also sell books directly — through their own website, via Payhip, Gumroad, or similar direct sales platforms — because direct sales may create a VAT or sales tax obligation that Amazon sales do not. If your publishing activities expand to include significant direct sales revenue, particularly cross-border digital sales into the EU, taking specific advice on your VAT position is worthwhile. The threshold at which this becomes relevant varies by country and by sales volume, but it’s a consideration to be aware of as your publishing business grows beyond a simple KDP-only operation.
Authors publishing print books through KDP Print and selling via Amazon don’t have a separate print VAT obligation arising from those sales for the same reason — Amazon is the seller of record and handles the applicable taxes. Authors who purchase print copies at author price and resell them independently — at events, through their own store — are in a different position and should factor the VAT treatment of those transactions into their bookkeeping.
