Pokies maths: RTP, volatility, odds and house edge

RTP and house edge

For a fixed-stake game, theoretical RTP is expected payout divided by the amount wagered. A hypothetical 96% RTP corresponds to a 4% theoretical house edge. That relationship describes repeated wagering, not the percentage of your initial deposit that will be left at the end of a session.

For example, A$1,000 of total wagering at a hypothetical 4% edge has A$40 of expected loss. The realised result can be much higher or lower. Wagering can exceed your starting balance because any returned money may be staked again. Expected loss is not a bill, a refund or a safe spending allowance.

#1 SPONSORED PARTNER

Safe Casino

+500% + 120 free spins

★★★★★

5.0 / 5

8,993 reviews

View current offer

18+ · Bonus conditions

18+ only. +500% and 120 free spins are promotional headline offers; eligibility, deposit requirements, wagering, eligible games, maximum bets, expiry and withdrawal limits are set by the operator. Read the complete live terms before accepting. Feature purchases may be excluded or exceed a bonus maximum-bet limit. Availability depends on your location. Offshore operator; no Australian online casino authorisation is claimed. Gambling involves financial risk; a bonus does not guarantee a profit.
Offer information supplied: 2026-10-05.

#2 SPONSORED PARTNER

WinCrown

+500% + 120 free spins

★★★★★

5.0 / 5

4,839 reviews

View current offer

18+ · Bonus conditions

18+ only. +500% and 120 free spins are promotional headline offers; eligibility, deposit requirements, wagering, eligible games, maximum bets, expiry and withdrawal limits are set by the operator. Read the complete live terms before accepting. Feature purchases may be excluded or exceed a bonus maximum-bet limit. Availability depends on your location. Offshore operator; no Australian online casino authorisation is claimed. Gambling involves financial risk; a bonus does not guarantee a profit.
Offer information supplied: 2026-10-05.

Volatility and hit frequency answer different questions

Volatility concerns the spread of payouts, not their average. Games with the same RTP can distribute prizes differently. A low-volatility label does not mean loss-free play, and a high-volatility label does not provide an exact probability for a large win.

Hit frequency usually counts rounds that return something, including payouts smaller than the stake. If a A$1 round returns A$0.30, the game may display a win, but the net result is a A$0.70 loss. Neither hit frequency nor the biggest possible prize tells you the chance of finishing ahead.

Why a losing streak does not create a debt

In a standard independent random round, past losses do not force a compensating win. Some games have visible state, such as held symbols or a feature multiplier; read the rules for that state rather than assuming every display has no memory. A persistent feature is not proof that the game owes you a profit.

Increasing a stake after losses changes the amount at risk, not the underlying advantage. No staking sequence cancels a house edge. If you are trying to recover previous spending, stop and use the support links rather than searching for a more aggressive system.

Read next