KDP Select fund dips to $66M for August, still up year over year

If you write in Kindle Unlimited, here's the number that quietly sets your page-read rate for August: Amazon's KDP Select Global Fund came in at $66 million, according to a September 21 report from Author Media. That's down $1.6 million from July's $67.6 million -- a real dip, month over month.

Don't read too much into it on its own, though. The same fund sat at $60.1 million in August 2025 -- meaning this August's total is still $5.9 million higher year-over-year, even after the slip from July. Author Media's own commentary treats the drop as likely seasonal noise rather than a systemic pullback, and points out the fund remains roughly $10 million ahead of where it stood twelve months ago.

Here's the part that's genuinely frustrating about this number: Amazon never explains what moves it. The fund total is set by Amazon from a pool that has nothing to do with any individual author's own sales, and it moves independently of how well your specific book did that month. A dip doesn't mean your writing underperformed; a jump doesn't mean you did anything differently either. It's simply the size of the pie every KU page read that month gets divided from.

What actually changes for you: the per-page royalty rate for August hadn't been posted as of this report, so you can't calculate your August page-read income with any precision yet. Don't budget against last month's per-page rate until Amazon confirms the new one.

The more useful habit is tracking the fund total over several months rather than reacting to any single one. A single month down after a single month up tells you almost nothing on its own; a pattern across a quarter tells you something real about whether KU reading volume, or Amazon's own allocation, is genuinely shifting.

If page-read income from Kindle Unlimited is a meaningful part of your revenue -- and for a lot of romance and serial writers, it's the primary line -- treat this one month as normal noise, not a trend. The year-over-year direction is still up. Watch the next month or two before you draw a conclusion from a single dip, and note your own per-page rate against the fund total each month so you can see whether the two are actually moving together for you.