Author bookkeeping: royalties by platform, advances, and print runs

Every platform reports a different month

The deposit that lands in October is usually August’s sales — Amazon KDP pays roughly sixty days after the end of the sales month, and each Amazon marketplace settles in its own currency, so one month of ebook sales can arrive as a handful of small deposits in USD, GBP, and EUR. Kobo Writing Life, Draft2Digital, and audiobook platforms each run their own cadence. If you record income when it hits the bank, your monthly numbers describe a sales month that ended a season ago, and a slow deposit looks like a slow book when it is really just a payout lag.

Statement-first bookkeeping fixes this: each platform’s monthly report is the revenue record, the deposit clears against it, and the difference is foreign exchange — a real cost worth seeing on its own line rather than buried inside “royalty income.” The same discipline catches the quiet errors: a marketplace whose payout never arrived, or a statement month that was never banked because it sat under the platform’s minimum payout threshold.

One title, four formats, four royalty streams

A single book earns differently in every format, and the books should show that. KDP ebooks pay on the well-known 70% or 35% royalty options; print-on-demand pays a royalty net of the print cost per copy; audio through ACX pays a share that depends on your distribution choice; and an offset print run earns nothing until you sell the copies yourself. We track revenue by title and format so a series author can see which book carries the backlist and whether audio actually earned back its production cost.

Advances are earned against royalties

A traditional publishing advance is income when you receive it — there is normally no obligation to pay it back — but your books should still track recoupment, because that number tells you when royalty cheques will start again. Each publisher royalty statement shows sales earned against the unrecouped balance; we mirror that schedule so you can see, per title, how far you are from earning out. Where a literary agent takes their commission off the top, we record the gross advance and the agency commission separately — the commission is a deductible expense, and netting it away understates both your income and your costs.

Launch costs cluster before a single sale

Self-publishing spends its money early: editing, cover design, formatting, and ads all land before launch day, often months before the first royalty statement. We tag these costs by title, so per-book profitability is a report rather than a guess — a book that never earns back its production spend is a decision-making fact, not a feeling. Ad spend deserves its own discipline: Amazon Ads, BookBub features, and Meta campaigns are charged separately from royalty payouts, so gross royalties and ad cost must both appear rather than a mental “net.” One genuinely free line item: Canadian authors get ISBNs at no charge through Library and Archives Canada, unlike US self-publishers who buy theirs.

Print runs, direct sales, and GST/HST

The boxes in your garage are an asset, not an expense. An offset run of a thousand copies goes on the books as inventory at cost per unit, moves to cost of goods sold as copies sell at events and through your website, and gets written down for damaged stock; review and giveaway copies come out as promotion expense, which keeps your margin per copy honest. Direct sales are also where GST/HST lives for most authors — platform royalties arrive from non-resident companies, but selling at a book table means charging tax once you pass the $30,000 small-supplier threshold (printed books get point-of-sale relief on the provincial portion of HST in Ontario, so the sticker math differs from other products). The monthly routine that holds all of this together is on our bookkeeping services page, and the W-8BEN, treaty-rate, and 1042-S side of US royalties lives in our author cross-border tax guide.