What Is KDP? Everything You Need to Know

By Robert Prime

Last reviewed by Robert Prime — March 2026

Self-publishing has transformed the way authors bring their books to market, but the technical barriers remain daunting—especially in the UK. One platform at the centre of this revolution is Kindle Direct Publishing (KDP), Amazon’s print and ebook self-publishing service. Yet, despite its popularity, many UK authors struggle to understand what KDP really entails, how it fits into their publishing plans, and what it costs in real terms.

Having spent over 25 years in eCommerce and worked closely with the UK publishing trade via LoveReading.co.uk, I’ve seen first-hand the frustrations authors face. When I published my own book, Google. Panic. Repeat., navigating KDP’s formatting requirements, file types, and distribution options felt like an uphill battle. If you’re a UK author wondering “What is KDP?”, this guide is for you. I’ll walk you through everything from the basics to advanced tips, with a clear focus on UK specifics, costs in GBP, and practical advice you won’t find elsewhere.

Table of Contents

• What You Need to Know Before Starting with KDP
• Step-by-Step Guide to Using KDP
• UK-Specific Considerations for KDP Authors
• Common Mistakes and How to Avoid Them
• Tools and Resources to Streamline KDP
• Cost Breakdown: What Does KDP Really Cost UK Authors?
• Expert Tips from 25 Years in the Industry
• Frequently Asked Questions

What You Need to Know Before Starting with KDP

Amazon KDP is a self-publishing platform that allows authors to publish their books in both digital (Kindle ebooks) and print formats (paperbacks and hardcovers). It handles distribution through Amazon’s massive marketplace, giving access to millions of potential readers worldwide.

The appeal is obvious: no gatekeepers, no upfront inventory costs, and control over pricing and rights. However, understanding KDP isn’t just about signing up and uploading a manuscript. It involves mastering file formatting, understanding print specifications, navigating royalty structures, and managing marketing metadata.

For UK authors, there’s an added layer of complexity. The pricing is in dollars by default, ISBNs must be sourced through Nielsen Book Services (not Bowker, as in the US), and VAT rules differ between print and ebooks. Many guides overlook these UK-specific details, making the journey unnecessarily confusing.

UK Self-Publishing Market Context

The UK self-publishing market is booming, with over 750,000 self-published titles currently available and a 68% increase in output over the past five years. In 2023, the market was valued at approximately £7.1 billion, encompassing print and digital sales across multiple platforms. Amazon remains the dominant player in digital book sales, controlling roughly 85% of the UK’s ebook market. However, print-on-demand (POD) has grown rapidly as UK readers increasingly demand physical copies without sellers needing to hold inventory.

KDP’s POD capabilities allow UK authors to publish paperbacks and hardcovers with no upfront print runs, which is crucial when competing with traditional publishers who invest heavily in print stock and distribution. This means you can launch your book with no upfront print costs, reducing financial risks considerably.

When I was formatting Google. Panic. Repeat., I found that UK print standards and reader expectations differ enough from the US that default KDP settings often felt off. Margins, trim sizes, and bleed needed careful adjustment to avoid costly reprints.

KDP Distribution Explained

KDP offers two primary distribution channels:

• Amazon Retail: Your book is available on Amazon marketplaces globally (Amazon.co.uk, Amazon.com, Amazon.de, etc.). This is the primary channel with the widest reach and is usually the first step for most authors.
• Expanded Distribution: Allows your print book to be available to other retailers and libraries through wholesalers like Ingram and Baker & Taylor. This channel can get your book into independent bookstores, library catalogues, and other online retailers such as Waterstones or WHSmith, but with lower royalties and more complex pricing.

Understanding these options upfront is critical because they affect your royalty rates, pricing strategies, and reach. For example, many UK authors mistakenly assume expanded distribution means easy shelf space in UK bookstores — in reality, it can be a slow process, and many books remain invisible without additional marketing.

Step-by-Step Guide to Using KDP

For UK authors new to KDP, here’s a clear, stepwise approach to getting your book live.

1. Create Your KDP Account

• Navigate to kdp.amazon.com.
• Sign in with your existing Amazon account or create a new one.
• Provide your tax information: UK authors must complete the UK tax interview, including National Insurance or Unique Taxpayer Reference (UTR) numbers if applicable.
• Add your bank account details for royalty payments in GBP or USD. Amazon offers direct deposit in GBP, but be mindful of exchange rates if you choose USD.

Pro Tip: Use your personal name or business name consistently to avoid royalty payment delays. I once had a colleague miss out on payments because their Amazon account name didn’t match their bank’s registered name — a simple but costly oversight.

2. Prepare Your Manuscript and Cover Files

This is where many stumble. KDP accepts:

• Manuscript: DOCX (Word), EPUB, or PDF for print. EPUB is increasingly preferred for ebooks as it supports reflowable text and complex formatting.
• Cover: JPEG or TIFF with specific dimensions depending on book size.

Key UK-specific formatting tips:

• Trim Size: The UK market favours B-format sizes (129 x 198 mm) and A-format sizes (110 x 178 mm). KDP defaults to US sizes like 6”x9” (about 152 x 229 mm), so you’ll often need to customise.
• Margins & Bleed: Print books require specific margins to avoid text getting cut off. Use Microsoft Word > Layout > Margins > Custom Margins or equivalent in your formatting software. For example, a 5mm bleed is typical for UK print books.
• Fonts: Embed fonts in PDFs or use standard ones compatible with Kindle devices and apps.
• Page Count: KDP requires a minimum of 24 pages for print books.

When I formatted Google. Panic. Repeat. I had to adjust margins multiple times to avoid text running too close to the spine — a common UK-specific issue given bookbinding differences.

3. Upload Your Manuscript and Cover

• From the KDP dashboard, click either “Create Paperback” or “Create Kindle eBook.”
• Fill in your book details:
  • Book Title (and subtitle if applicable)
  • Author Name
  • Book Description (this is your sales pitch; invest time here)
  • Keywords (up to 7; crucial for discoverability)
  • Categories (choose 2; UK categories may differ slightly from US ones)
• Upload your prepared manuscript file.
• Upload your cover file or use KDP’s Cover Creator tool (limited for professional use).

Menu Path Notes:
After logging in:
Bookshelf > Create New Title > Paperback or Kindle eBook > Enter Details > Upload Manuscript > Upload Cover > Preview > Pricing

4. Set Pricing and Royalties

Amazon KDP offers different royalty structures depending on format and distribution:

• Ebooks:
  • 70% Royalty: For ebooks priced between $2.99 (£2.30 approx.) and $9.99 (£7.70 approx.) and sold in eligible countries.
  • 35% Royalty: For ebooks priced outside this range or sold in ineligible territories.
• Print:
  • 60% Royalty of the list price minus printing costs.
  • Printing costs depend on page count, ink type (black & white vs. colour), and trim size.

UK-specific pricing considerations:

• Ebooks sold in the UK attract 20% VAT, which Amazon includes in the retail price. This means to net a £2 royalty on a £4.99 ebook, you must price it higher, considering VAT and Amazon’s cut.
• Pricing your print book competitively in GBP is critical. Many UK readers expect paperbacks priced between £7.99 and £12.99 depending on genre and page count.

5. Order Proofs and Review

Never skip ordering a printed proof copy. The KDP online previewer is useful but not infallible—especially with images, fonts, and page breaks.

• Order via the “Print Proof” button on your title page in the KDP dashboard.
• Review physical aspects: cover gloss/matte, font size, margins, colours, and spine alignment.

I once discovered a critical typo in the print proof of my book that wasn’t obvious in digital previews — spotting it saved me from negative reviews.

6. Publish and Monitor

• After final approval, click “Publish”.
• Your book typically appears on Amazon within 24–72 hours.
• Use the KDP dashboard to monitor sales data, update metadata, run promotions (e.g., Kindle Countdown Deals), and upload new files if necessary.

UK-Specific Considerations for KDP Authors

If you’re UK-based, these KDP nuances are vital for a smooth experience.

ISBNs: Why You Should Buy Your Own from Nielsen

KDP offers free ISBNs, but they list Amazon as the publisher, which limits your control and professionalism. In the UK, ISBNs must be purchased through Nielsen Book Services (not Bowker, which operates in the US):

Why invest?

• Owning your ISBN means you control your book’s metadata and can distribute beyond Amazon (e.g., to Waterstones, WHSmith).
• It gives you ownership and flexibility for future editions or formats.
• Many UK bookstores refuse to stock books without a valid Nielsen ISBN.

VAT on Books

The UK VAT landscape for books is complex:

• Print books: Zero-rated for VAT (0%). This means no VAT is added to the price.
• Ebooks and audiobooks: Standard VAT rate applies (currently 20%).

This distinction impacts your pricing strategy significantly. For example:

• If you price an ebook at £4.99, Amazon sets the retail price including VAT, which reduces your net royalty.
• For print books, the VAT advantage means more competitive pricing and better margins.

Currency and Payment

KDP pays royalties in USD by default. UK authors can elect to be paid in GBP, but:

• Exchange rates fluctuate, which can impact your earnings.
• Bank transfer fees may apply.
• Some authors choose to keep funds in USD until favourable exchange rates arise.

Print Specifications for UK Market

UK printers favour:

• B-format size: 129 x 198 mm (common for trade paperbacks)
• A-format size: 110 x 178 mm (smaller mass-market style)

KDP’s default US sizes (like 6”x9”) correspond roughly to 152 x 229 mm, which can feel oversized for UK buyers accustomed to smaller formats. Customising your trim size to UK standards improves reader comfort and market acceptance.

Distribution Outside Amazon

KDP’s expanded distribution can place your book with UK wholesalers, but:

• It is limited compared to working directly with distributors like IngramSpark, which offers wider bookstore penetration.
• Many UK indie bookstores prefer direct orders from publishers or distributors with local presence.
• Consider combining KDP for Amazon sales and IngramSpark for broader distribution.

I consult for a billion-pound business that was struggling with the exact same issue of distribution complexity—KDP alone wasn’t enough to scale their back catalogue effectively in the UK market.

Common Mistakes and How to Avoid Them

From my experience formatting thousands of books and launching my own titles, here are pitfalls UK authors consistently face:

1. Ignoring UK ISBN Requirements

Many UK authors use free KDP ISBNs unaware Amazon will be listed as publisher, complicating bookstore orders and rights management.

My advice: Always buy your own ISBN from Nielsen. A single ISBN purchase will save you headaches down the line.

2. Incorrect Formatting for Print

Margins, bleed, and fonts often cause print files to be rejected. When I formatted Google. Panic. Repeat., I wasted hours fixing margin errors—time better spent writing.

Avoid: Use UK-standard trim sizes and verify margins carefully. Use professional formatting tools or services.

3. Underestimating the Importance of Metadata

Titles, descriptions, keywords, and categories influence discoverability on Amazon. Neglecting these can doom a book regardless of quality.

Tip: Perform keyword research using tools like Publisher Rocket or Amazon’s auto-suggest, and craft compelling descriptions.

4. Relying on Cheap Fiverr Formatters

I once hired a £130 formatter for my book who delivered a mess. Fiverr gigs often use stolen images or provide outdated formats, risking rejection or poor reader experience.

Better: Invest in reputable UK-focused services tailored to KDP specs.

5. Setting Unrealistic Pricing Without VAT Consideration

Pricing ebooks without accounting for VAT or currency conversion leads to unexpected royalty shortfalls.

Calculate: Remember VAT is included in the retail price. Use Amazon’s royalty calculator or my custom UK pricing tool at publishing.co.uk.

6. Skipping Proof Copies

Don’t skip ordering printed proofs. The online previewer rarely catches all issues, especially with images and page breaks.

Experience: I’ve seen authors publish with misaligned covers or invisible text margins that tanked reviews. Proof copies are a cheap insurance.

Tools and Resources to Streamline KDP

KDP’s interface and file requirements can overwhelm new authors. Here are tools and services UK authors swear by:

Formatting Software

• Microsoft Word: Widely used for manuscript preparation. Use Layout > Margins > Custom Margins for print formatting.
• Scrivener: Popular for writing and exporting clean files.
• Vellum (Mac only): Excellent for ebook formatting but expensive and US-centric.
• Atticus: Newer all-in-one writing and formatting tool aimed at indie authors.
• Calibre: Good for converting ebooks but technical.

Cover Design Tools

• Canva: Free and easy for DIY covers but beware of overused templates.
• Adobe Photoshop/Illustrator: Professional-level but requires skill.
• Spiffing Publishing: UK-based design agency charging around £450 for premium covers.

ISBN Purchase

• Nielsen Book Services: Official UK ISBN agency. Visit nielsenisbnstore.com.

Professional Formatting Services

• publishing.co.uk: Automated, UK-focused formatting with KDP-ready files tailored for UK print sizes and standards. I built this platform after struggling myself.

Before publishing Google. Panic. Repeat., I hired a so-called “expert” formatter for £130 who delivered poor results. That experience pushed me to create publishing.co.uk to save authors from the same headaches.

Cost Breakdown: What Does KDP Really Cost UK Authors?

Understanding the real costs is essential for budgeting and pricing.

Printing costs are deducted from print royalties and vary by page count and ink type.

Example Real-World Budget for a Debut UK Author

• ISBN (single): £93
• Cover design (professional): £450
• Formatting service: £100
• Proof copies (2 copies): £8
• Marketing budget: £200 (ads, promos)

Total upfront investment: Approx. £850

Many authors underestimate these costs and expect to publish “for free.” While KDP charges no platform fees, real-world quality demands investment.

Real-World Case Studies and Examples

Case Study 1: Sarah, a UK Fiction Author

Sarah self-published her debut novel via KDP in 2021. She purchased her own ISBN from Nielsen to maintain control and priced her ebook at £3.99. After accounting for 20% VAT and Amazon’s 30% cut, she nets approximately £2.23 per sale. She chose a B-format trim size and carefully ordered print proofs to ensure quality.

Sarah combined KDP with IngramSpark for wider print distribution, which allowed her book to appear in Waterstones stores. Her sales grew steadily over 18 months, with print accounting for 40% of income, highlighting the importance of POD in the UK market.

Case Study 2: Mark, a Non-Fiction Business Author

Mark tried free KDP ISBNs initially, but his book was rejected by UK libraries and wholesalers when he attempted expanded distribution. After investing £93 in a Nielsen ISBN and re-publishing, Mark successfully placed his book in several UK library catalogues. He credits owning the ISBN as key to expanding beyond Amazon.

Mark also used KDP Select for three months to gain exposure via Kindle Unlimited, but found exclusivity restrictive and later moved to wide distribution.

Expert Tips from 25 Years in the Industry

Drawing from my eCommerce background and publishing experience, here’s how to approach KDP like a pro:

Treat Your Book as a Product, Not Just Art

You’re entering a competitive marketplace. Presentation, metadata, and pricing are as crucial as content quality.

Focus on Format and Metadata Early

Spend as much time on formatting and metadata as on your manuscript. A shoddy interior or weak description kills sales.

Avoid Free ISBNs for UK Authors

Invest in your own ISBN from Nielsen. It signals professionalism and keeps your rights intact.

Proof Every Format Thoroughly

Ebook and print formats differ. Check every version carefully, including mobi, EPUB, and PDF proofs.

Automate Formatting If Possible

Manual formatting is a time sink. Automated services like publishing.co.uk can save hours and reduce errors, letting you concentrate on writing and marketing.

Plan for Currency and VAT Impact

Royalties come in USD; VAT applies differently to print and digital. Factor this into your pricing to avoid surprises.

Use Amazon’s Marketing Tools Wisely

KDP Select and Kindle Unlimited can boost visibility but tie you into exclusivity. Analyse your goals before enrolling.

Frequently Asked Questions

What is the most common mistake UK authors make with KDP?

Failing to purchase their own ISBN and relying on Amazon’s free one. This restricts distribution and lists Amazon as the publisher, which can hurt credibility with UK retailers.

How much does KDP cost in the UK?

KDP itself is free to use, but real costs come from ISBN purchase (£93 single ISBN), cover design (£300-£600), and professional formatting (£70+). Printing proofs and VAT also add to expenses.

What tools do UK authors recommend for KDP?

Microsoft Word for manuscript prep, Canva or professional designers for covers, and automated formatting services like publishing.co.uk for print and ebook files.

How long does the KDP process typically take?

From manuscript finalisation to live publication can take 1-2 weeks, allowing time for formatting, proofing, and Amazon’s review process.

Can I handle KDP myself or should I hire a professional?

You can DIY, but many UK authors find the technical demands overwhelming. Hiring professionals or using automation saves time and reduces costly errors.

What are the UK-specific requirements for KDP?

UK authors must consider buying ISBNs from Nielsen, setting VAT-inclusive pricing for ebooks, customising trim sizes to UK standards, and managing currency conversions for royalties.

What print sizes should UK authors choose on KDP?

Choose trim sizes common in the UK such as B-format (129 x 198 mm) or A-format (110 x 178 mm). Custom trim sizes can be set in the KDP print setup under “Paperback Details > Paperback Content > Trim Size.”

Does KDP cover the cost of VAT for ebooks sold in the UK?

No, VAT is included in the retail price set by the author, and Amazon deducts VAT before calculating royalties. Authors need to price ebooks accordingly to maintain desired net earnings.

Publishing on KDP is the most accessible way for UK authors to get their work in front of readers worldwide, but it’s not without its challenges. Understanding the platform’s nuances, especially from a UK perspective, is essential to avoid pitfalls and maximise success.

Having spent decades in digital commerce and publishing, I can tell you that the technical headaches are real—but they are solvable. If you want to save time and ensure your book meets KDP’s exacting standards, consider professional formatting solutions tailored for UK authors.

The book market is vast and growing (£7.1 billion in 2023), and KDP offers a powerful entry point. Equip yourself with the right knowledge, tools, and partners, and you’ll be well on your way to publishing success.

About the Author

Robert Prime is a best-selling self-published author, veteran eCommerce strategist, and the founder of publishing.co.uk. With over 25 years of experience in digital business and 15 successful exits, he brings a battle-tested perspective to the publishing industry. After experiencing firsthand the archaic, headache-inducing process of formatting a KDP-compliant book for his own best-seller, Google. Panic. Repeat., Robert built publishing.co.uk to solve the problem for other authors. He is also a co-owner of the LoveReading.co.uk network (the UK’s largest book review platform), founder of the Amazon growth agency MrPrime.com, and a member of the Forbes Business Council.

This comprehensive guide aims to give UK authors the edge they need to navigate KDP’s complexities and succeed in today’s fiercely competitive market.