Definition
PAU (Paying Active Users) is the number of distinct players who made at least one successful deposit within a given window — day, week or month. It is the paying core of the player base, as opposed to DAU/MAU, which count any activity (login, bet, game round) regardless of payment.
Formula
PAU (period) = distinct players with ≥ 1 successful deposit in the period
Only successful deposits qualify — attempts don't count. PAU is the denominator of ARPPU (ARPPU = NGR ÷ PAU) and the base for depositor-centric retention reporting.
How operators use it
PAU is the honest size of the business. MAU can grow on free-to-play features, content browsing and bonus tourists while revenue stagnates; PAU cannot. Operators track the PAU/MAU ratio as a monetization-density gauge: a rising MAU with flat PAU means the product is attracting audiences it cannot monetize — or that the cashier is failing them. Weekly and monthly PAU, split by new (first-time depositors) versus returning depositors, is the standard executive view: it separates acquisition-driven growth from genuine retention.
The critical operational property of PAU is that it rarely falls without warning. A PAU decline is a lagging indicator — by the time monthly PAU drops, the causes have been active for days or weeks: deposit approval rates degrading on a key method, a slipping share of returning depositors, lengthening gaps between deposits, weakening reactivation performance. Mature operators therefore instrument leading signals around PAU rather than staring at the headline number, and treat a confirmed PAU drop as a symptom to decompose — new vs returning, by market, by payment method, by cohort — never as a metric to "fix" directly.
PAU also disciplines bonus and CRM strategy. Campaigns are cheap ways to spike DAU; the test of a campaign is whether it moves PAU and, one level deeper, whether the incremental depositors it brings return without a bonus next period. Reading campaign success at the activity level rather than the paying level is one of the most common ways CRM programs overstate their impact.
Common misinterpretations
The universal error is using "active users" and "paying users" interchangeably: DAU/MAU measure engagement, PAU measures monetization, and the gap between them is a finding, not a rounding difference. A second error is treating any PAU drop as a retention failure — a payment-provider outage or a fraud-rule change can cut PAU with retention perfectly healthy; always check approval rates before blaming CRM. Third, PAU counts heads, not value: PAU can hold steady while a few high-value players quietly leave, so PAU belongs next to ARPPU, never instead of it.
Related metrics: ARPPU · First-Time Deposit (FTD) · Cohort Retention · Churn Rate · ARPU
Common questions
What is the difference between PAU and MAU?
MAU counts players with any activity in a month — logins, bets, game rounds — regardless of payment. PAU counts only players with at least one successful deposit. MAU measures reach and engagement; PAU measures the paying core that actually funds the business.
Why did PAU drop when nothing changed in marketing?
The most common non-marketing causes are payment-side: an approval-rate drop on a key deposit method, a provider outage, or tightened fraud rules blocking legitimate repeat depositors. Check deposit AR by method before investigating retention or CRM.
Is PAU a leading or lagging indicator?
Lagging. PAU rarely collapses overnight — degradation shows up first in leading signals such as approval-rate drift, a falling share of returning depositors and lengthening intervals between deposits. Instrument those, and PAU stops surprising you.