The promise against the terms

The phrase 30 free spins no deposit required keep what you win is doing three jobs at once, and only the first is arithmetic. Thirty spins are easy to price: at the typical 10p a spin they carry £3.00 of face value. No deposit required means the batch lands on an account opening, so nothing is paid in. Keep what you win is the phrase that carries the cost, because it reads as an unconditional promise and rarely works as one in the terms. This page prices the keep half once the wagering, the cap and the clock printed under it have had their say.

In this market, keep what you win usually means that whatever the spins pay credits as bonus funds: real enough to look at, restricted until the attached wagering has been turned over. A minority of offers run the genuine cash version, where the spins pay into the withdrawable balance with nothing to climb, and those price as a flat £2.85 rather than a ladder. The difference is not marketing language. It is the difference between a sum you can withdraw on Friday and a sum you can withdraw after completing the turnover in the bonus terms.

Four numbers decide which version you are holding: the spin value, the wagering multiple, the cashout cap and the expiry. Each has a section below, and the model totals them at the centre of the market ranges.

Face value: 30 spins at 10p

Face value is the simplest line in the ledger: 30 spins at 10p each carry £3.00 of face value. That is what the operator pays the game studio for, and it is the ceiling of what the batch can be worth before the terms touch it. It is not a prediction of what the spins will pay. Slots return a percentage of stakes over long runs, and the games these batches are pinned to tend to publish returns in the mid-nineties.

The model takes 95%, because that is where the category's published return figures tend to cluster. Applied to £3.00 of face value it gives about £2.85 of winnings. State the assumption and the number is honest: £2.85 is the centre of a distribution, not a prediction. Some runs of 30 spins pay nothing, a few trigger a bonus round worth several times the face value, and most land between a few pence and a couple of pounds.

Two practical points follow. The spin value is where cheap batches hide: 30 spins at 2p carry 60p of face value, a fifth of this batch, under a headline that reads the same. And spins are usually pinned to one game or a short list, so the return that matters is that game's return, not the lobby average. Both details sit in the terms, and both move the £2.85.

The wagering base and the turnover it builds

The wagering multiple is where the keep half of the promise does its work. When the spins pay £2.85 of winnings, the offer credits them as bonus funds and attaches a multiple that must be staked before the balance converts to cash. The market band on spin winnings runs 35x to 45x. The model takes 40x, the midpoint, because that is the figure this part of the market asks most often.

Worked at 40x on £2.85, the turnover comes to £114.00. That is not a deposit and not a loss; it is the amount of staking the balance must survive before it becomes withdrawable. At 20p a stake it is 570 spins, and each carries the house edge, so the £2.85 erodes as it goes. The same 95% return that built the winnings works against the balance during the climb, which is why a wagered batch is worth less than its face value even before a cap is applied.

The band matters as much as the midpoint: 35x builds £99.75 of turnover and 45x builds £128.25, a gap of nearly a quarter of the climb. One detail decides most of the difference in your favour: whether the multiple keys to the winnings or to a larger base. Wagering on winnings keys the ladder to £2.85, and every figure on this page uses that basis.

Caps and clocks: the trim and the timer

The cashout cap trims the tail of the distribution. Where a cap applies, the common band is £50 to £100: whatever the wagered balance grows to, the withdrawal stops at the printed ceiling. On a 30-spin batch the cap looks generous, because £2.85 of modelled winnings sits far below £50. It earns its place when a bonus round lands: a balance of £180 built on one lucky run is paid at £100 or £50, and the remainder stays in the account. The cap flattens the top of the distribution at the printed figure, and nothing done at the reels moves it.

The expiry clock runs alongside. The typical window is seven days from credit, and a batch left unplayed past it is cancelled. Where the 30 spins trickle out in daily tranches, the clock usually applies to each tranche separately, so winnings from the first day start their wagering clock before the last spins have been played. Miss a tranche and those spins are gone with it.

Both figures are printed under the offer rather than on it. The banner says keep what you win; the terms say keep what you win up to £50, within seven days, after 40x. Reading the second document is the whole task, and it takes about two minutes.

When 30 free spins no deposit required keep what you win rides a first deposit

The phrase says no deposit, and most promotions in this bracket mean it literally: registration unlocks the batch and nothing is paid in. A minority hang the thirty spins on a first deposit, often a £10 minimum, while a smaller registration batch keeps the no deposit wording honest. Where a deposit sits in the chain the sum gains a cost line: £10 paid to unlock £3.00 of face value and a modelled £2.85 of winnings, with the deposit not returned alongside them.

The deposit can also change the wagering base. Some terms lock the deposit behind the same turnover as the spin winnings, which means money you paid in cannot be withdrawn until the ladder is done. That is a materially worse position than the clean version, where your own money never entered the account at all.

The practical read is short. If the 30 spins land without a deposit, the modelled cost of the promise is your time. If they land on a £10 deposit, add the £10 to the cost line and check whether the deposit sits inside the wagering before comparing the deal with its clean shape.

The model and the market

The first table gathers the model in one place, from the face value down to the ceiling, with each figure's assumption printed beside it. A reader who prefers a different return or a different multiple can rebuild the column from the basis column alone.

Figures are category-typical and modelled; a payment desk's own terms govern.

The second table widens the frame to the market: British licensed operators as the baseline, then the offshore end of the market where offers of this sort live. The columns are the ones that decide what a welcome batch is worth, and the licence column decides what else comes with it.

Figures are category-typical ranges compiled from operator-published terms at the time of writing, not quotes of any single promotion. Rows carrying a UK licence are the British baseline shown for comparison; none of them are claimable at the offshore offers this page discusses.

What a UK licence would have bought you

A British licence buys structures the offshore end of the market does not carry, and the gap is easiest to see item by item. Gamstop comes first: registration is free, covers every licensed operator at once, and takes effect from immediately to the next working day depending on the term chosen. An offshore offer sits outside that register.

Independent dispute resolution is the second structure. Licensed operators are tied to an alternative dispute resolution provider, with IBAS the common route, so a disagreement over a withdrawal has somewhere to go that is neither the operator nor you. Offshore, the complaint route begins and ends with the operator's own support desk.

The third is the credit card ban, in force since 14 April 2020, which removes the most dangerous way to fund a losing run: a licensed operator cannot take a credit card for gambling, while offshore rows in the comparison table can and do list them. Remote Gaming Duty, charged at 21% on British remote gaming profits and rising to 22% in April 2027, funds the system that polices all of this, and it is a cost the offshore rows do not pay.

Affordability checks complete the picture. A licensed operator must intervene when losses point to harm, and the checks that catch it early are a condition of the licence rather than a courtesy. None of that travels with an offshore offer, which is what the block below the questions spells out.

Cost it yourself

The calculator rebuilds the arithmetic with your own figures. Put in the spin value, the number of spins, the return assumption and the wagering multiple, and the totals move with them: face value first, then the modelled winnings, then the turnover the multiple builds and the ceiling the cap prints. Where an offer wagers a larger base than the winnings, put the larger base in and the gap will show itself. The modelled £2.85 is one input away from being your figure.