Jackpots

Fixed and progressive

A fixed jackpot is a line on the pay table. It's the same amount every time, and its cost is built into the machine's return like any other prize.

A progressive grows. A small share of every bet on the game goes onto the meter, the meter starts again at a set amount (the seed) when someone hits it, and the climb begins again. Progressives come in three sizes, roughly. A standalone progressive grows from one machine. A local one links a bank of machines in the same casino. A wide-area one links machines across many casinos, sometimes across a whole state, which is how the meters get into the millions.

The rules for the linked kind are set by each state's regulator. Nevada's Regulation 14.045, in the version revised in August 2026, says an inter-casino linked progressive that grows with play has to add at least 0.1 percent of the money wagered to its primary meter, or at least $100 a day if it grows over time instead. That's a minimum. The actual rate is set by the game, and in most cases you won't see it posted.

Who pays for the meter

The share that goes onto the meter isn't a gift from the casino. It's part of the game's RTP, carved out of the smaller prizes. Put a progressive slot next to a machine without one that returns the same percentage, and the progressive has to pay less on its everyday wins, so that it can pay one player a very large amount every so often.

That's the same trade as volatility on the slots page, pushed as far as it goes. The money that funds the jackpot is collected from every player on the link, and it comes back to one of them. For everybody else, the game plays tighter than its RTP says, because a slice of that RTP is sitting on the meter waiting for someone else.

I'd think of it the way I think about a long-shot future in sports. You're paying for a ticket on something big. Nothing wrong with that, as long as you know the everyday price is higher and you size the bet for a ticket, not for a living.

The max-bet catch

Many progressives only pay the top prize on a maximum bet, and the pay table says so. Hit the jackpot combination on a smaller bet and you get a fixed amount, or nothing extra. Meanwhile your smaller bets were still feeding the meter.

That makes for a plain rule. If you're going to play a progressive, play it at the bet that qualifies for the top prize, and if that bet is more than you're comfortable with, play a cheaper machine. Paying in without being able to win the thing you're paying for is the worst deal on the floor.

When a big meter changes the math

Usually it doesn't, because you can't see the odds of hitting a slot jackpot and so you can't price it. Video poker is the exception, because the odds of a royal flush are known.

On a 9/6 Jacks or Better machine, the royal comes about once in 40,391 hands with best play, according to Wizard of Odds' analysis, and at the standard 800 for 1 the game returns 99.54 percent. Each extra unit on the royal is worth 1 in 40,391 of a unit per hand, so every 100 coins added to the royal adds about a quarter of a point of return. The 0.46 point gap closes when the royal reaches roughly 986 for 1. On a quarter machine played at five coins, that's a meter of about $1,230 where the base pays $1,000, before the small strategy changes a bigger royal calls for.

That is the one situation where a jackpot meter can tilt a casino game toward the player, and the players who chase it know the arithmetic cold. Two warnings from me. The base pay table has to be full pay before the meter is worth anything (a progressive on a short-pay machine starts a long way behind), and a royal every 40,000 hands means a positive game can still eat a bankroll for a very long time before it pays. The full treatment of the game is in video poker.

Slot meters can't be priced like that, so I'd never call a big slot meter good value. It might be. You have no way to know.

When you hit

A large jackpot isn't paid like a small win. The machine locks up and an attendant comes over, because the casino has to identify you and fill in a tax form before it pays. The IRS instructions for Form W-2G set the minimum reporting threshold for payments made in 2026 at $2,000, to be adjusted for inflation in later years, and a slot jackpot at or over the threshold gets a form. Bring ID.

The form is paperwork, and the tax is a separate thing. The IRS says gambling winnings are fully taxable whether a form is issued or not, and state tax depends on where you live. I'm not a tax adviser. If you hit something large, talk to someone who is before you spend it. The lottery side of this, including lump sum against annuity, is on the lottery jackpots page and in lottery taxes.

The meter is an advert

Casinos put progressive totals on big signs over the bank and on the screens by the door for a reason. A number in the millions sells every machine on the link, and it sells them to people who would otherwise walk past. It works on everybody (it would work on me).

So I'd read the sign the way I read a sportsbook's parlay boost: it tells you where the casino wants your money. If you play for the jackpot, set the amount you'll spend chasing it before you start and treat it as gone the moment it goes in. If that number starts to grow, the responsible gambling page is the place to go next.