BitStarz vs mBit
Neither wins on the bonus, because the bonus is effectively identical. BitStarz and mBit both require 40x wagering on the bonus alone, quoted from each operator's own terms through the Internet Archive and checked verbatim. At a 4% house edge the break-even multiple on a bonus-only base is 25x, so both sit 1.6 times over it and both cost the same to clear: on a 100-unit bonus, 4,000 in required turnover and about 160 in expected cost against 100 of bonus. Pick on something else, then — but note that beyond that multiplier and its base we have verified nothing else about either operator, so the tiebreak is yours to make from their live terms, not ours to hand you.
| On a £100 deposit, 100% match | BitStarz | mBit |
|---|---|---|
| ProvenPayouts Score | 8.7/10 (Strong) | 8.4/10 (Strong) |
| Wagering (from its own terms) | 40× | 40× |
| Applies to | Bonus only | Bonus only |
| Break-even on that base | 25× | 25× |
| Turnover owed | £4,000 | £4,000 |
| Expected cost to clear | £160 | £160 |
| Realistic value | −£60 | −£60 |
| Terms snapshot | 2026-05-01 | 2023-05-31 |
| Established | 2014 | 2014 |
Every figure above is computed from the operator's own archived terms and the model published at /bonus-break-even, at a 4% house edge. “Not published” and “not readable” are findings, not omissions — where an operator does not state a term, or serves it from a page an archive cannot read, that is said rather than filled in.
BitStarz
The proven incumbent — reliable, if you accept the admin fee. Editorial assessment, not first-hand tested.
mBit
Same reliable SoftSwiss backbone as BitStarz, with the biggest welcome package. Editorial assessment, not first-hand tested.
Which bonus is actually cheaper to clear?
Neither, and that is the finding rather than a dodge. Both operators require 40x wagering on the bonus alone — taken from each one's own published terms through the Internet Archive and checked word for word. Same multiplier, same base, so there is one calculation and it serves for both. Take a 100-unit bonus. Required turnover is the multiplier times the base: 40 x 100 = 4,000. Bonus conditions typically steer you towards slots running about 96% RTP, a 4% house edge, so the expected cost of pushing that turnover through is 4,000 x 0.04 = 160. Realistic value is the bonus minus that cost: 100 - 160 = -60. On expectation the offer takes more than it gives, which is true of essentially every welcome bonus and is why we publish the arithmetic rather than a star rating. The break-even multiple at that edge is 1 / 0.04 = 25x on a bonus-only base. Both sit at 40x, 1.6 times over the line. To come out level at 40x you would need a game holding 2.5%, a 97.5% RTP title, and bonus terms generally restrict which games count towards turnover at all. The full method is at break-even table.
Why does 40x here cost less than 35x somewhere else?
Because the base decides the cost, and the multiplier on its own tells you almost nothing. A wagering requirement applies either to the bonus alone or to deposit plus bonus, and at a 100% match the second base is twice the size of the first. Our archive-verified set makes the point without argument. BitStarz and mBit are both 40x on the bonus alone, 1.6 times their 25x break-even. Vavada is 35x on the bonus alone, 1.4 times over. But 7Bit and Mirax are 35x on deposit plus bonus: a lower headline number, yet 2.8 times over their 12.5x break-even, because the base has doubled. KatsuBet is 45x on deposit plus bonus, 3.6 times over. So a 35x offer can cost roughly double what a 40x offer costs, and the advertised number gives you the ranking backwards. Read the base before the number, every time. For this particular pair it means the two packages price identically however differently they are marketed — and it means a reader weighing either against a lower-multiplier rival elsewhere should establish that rival's base before treating the smaller number as the better deal.
What have you not verified about these two?
A great deal, and an honest comparison lists it rather than filling the gap. What we have verified for this pair is the wagering multiplier and the base it applies to. Everything else that would ordinarily separate two casinos we have not verified to a standard we will publish: how many days you get to clear a bonus, the maximum bet permitted while bonus funds are live, which game categories contribute to turnover and at what percentage, minimum and maximum withdrawals, whether a large win can be paid in instalments, the licensing entity behind each brand, and each operator's independent complaint record. Other comparison sites will quote you all of it in confident detail. Some of those figures will be accurate. You have no way of telling which, and nor do we without reading each operator's own live terms. Those first four conditions matter more than most readers expect, because they are where welcome offers are actually lost — a max-bet rule breached by a single spin, a category weighted at a fraction of turnover or excluded entirely, a clock that runs out before the wagering does. Before depositing at either, open the bonus terms page yourself and write those four numbers down. An operator that makes them hard to find has told you something.
How do you price either offer against your own deposit?
Four inputs, one line of arithmetic, and you can do it on the operator's own page before you claim anything. First, find the bonus amount you would actually receive, not the advertised maximum — headline figures like 'up to' some large sum describe the top of a multi-deposit package and never enter the calculation. Second, find the base the multiplier applies to: bonus alone, or deposit plus bonus. Third, multiply. For a bonus-only base at 40x, turnover is 40 times the bonus. For deposit plus bonus, add your deposit to the bonus first, which at a matched deposit roughly doubles the result. Fourth, multiply that turnover by the house edge of the games the terms permit — 0.04 for a 96% RTP slot, and check that the games you intend to play are actually eligible, because restricted or low-weighted categories quietly raise the effective requirement. Subtract the answer from the bonus. That is your realistic value, and it is negative for almost every offer on the market, this pair included. The point is not to find a positive one. It is to know how much a given package costs before you accept the conditions attached to it.
If something goes wrong, where does a complaint actually go?
This is worth settling before you deposit, not after a withdrawal stalls, and it is a question about the operator's licensing rather than its bonus. Offshore crypto casinos generally hold licences that carry far weaker player-recourse machinery than a European regulator or a nationally regulated market provides: no ombudsman with binding authority, limited published enforcement, and a complaints route that in practice runs through the operator's own support first. Some brands additionally participate in independent mediation or accreditation schemes, which give a stalled dispute somewhere to go that is not the operator itself; those schemes publish their member lists openly, so you can check any brand against them in a couple of minutes. We have not verified which licence either BitStarz or mBit holds, nor whether either takes part in any such scheme, so we are not going to tell you one is better protected than the other. What we will say is that the check is quick and worth doing yourself for both: identify the licensing entity and number on the operator's own footer, confirm it on the regulator's register, and search the independent mediation bodies for the brand name. Do it before money moves, not afterwards.
So who does each one suit?
On the evidence we can stand behind, nothing separates them. Identical multiplier, identical base, identical cost to clear, 1.6 times over break-even at both. Anyone telling you one is clearly the better pick is working from figures they have not shown you. The honest framing is conditional. If, when you read the two live bonus pages, one gives you a clearing window you can realistically meet and the other does not, that decides it — the deadline is the condition most players actually fail. If the max-bet rule at one is low enough that you would be grinding thousands of small spins to clear turnover, and the other is workable at your normal stake, that decides it. If one publishes its withdrawal minima, maxima and any large-win instalment clause in plain terms and the other buries or omits them, prefer the one that tells you, because a cap you dislike is still better than a cap you discover after winning. None of those three checks takes more than a few minutes, and all three are on the operators' own pages. Our editorial score for each sits on its review page and is a judgement formed from public information, not a measurement — it should not decide this.
It genuinely depends, and not on anything we can settle for you. The two bonuses are priced the same — 40x on the bonus alone at both, 1.6 times over break-even — so they cannot be the tiebreak. Everything capable of breaking the tie sits in each operator's live terms: the clearing window, the maximum bet during wagering, game weighting, and the withdrawal and large-win clauses. Read those four at both before depositing and pick the one you can actually live with. Our published score is an editorial judgement from public information, not a measurement, and it is not a reason to choose either.
FAQ
Is BitStarz or mBit's bonus cheaper to clear?
Neither. Both require 40x wagering on the bonus alone, verified from each operator's archived terms, so the arithmetic is identical. On a 100-unit bonus that is 4,000 in required turnover. At a 4% house edge the expected cost is 4,000 x 0.04 = 160 against a 100-unit bonus, so realistic value is -60. The break-even multiple on a bonus-only base at that edge is 25x, meaning both sit 1.6 times over the line. Any difference between the two lies in conditions we have not verified, not in the price of clearing.
Why does the same 40x cost the same when the advertised packages differ?
Because the multiplier applies to the bonus you actually receive, not to the advertised maximum. Headline figures describe the top of a multi-deposit package and never enter the calculation. What matters is the bonus credited and the base the multiplier applies to. Both of these operators use the bonus alone, which is the cheaper of the two common bases. For contrast, 7Bit and Mirax both publish 35x on deposit plus bonus — a lower headline number that costs materially more, because at a matched deposit the base doubles and break-even falls from 25x to 12.5x.
Can I open an account at BitStarz or mBit from where I live?
We do not know, and we are not going to guess. Restricted-country lists sit in each operator's terms, change without notice, and are enforced at verification rather than at signup — meaning a block can surface after you have deposited and won. We have not verified either operator's list. Check three things yourself: the restricted jurisdictions clause in the operator's live terms, whether your country requires operators to hold a local licence, and whether the brand appears on your regulator's register. Treat an absence of information as unknown, never as permission.
How quickly do BitStarz and mBit actually pay out?
We do not know, and neither does anyone quoting you a figure. ProvenPayouts does not deposit, does not withdraw and does not time payouts, so we publish no timings of our own and will not repeat an operator's marketing claim as though it were one. Any advertised processing time describes the operator's own handling only — it excludes identity verification, which is where withdrawals most often stall, and it excludes blockchain confirmation. Assume a first withdrawal will trigger verification and budget time for it, whatever the front page says.
What happens at either if I win a large amount?
Unverified for both, and it is the single most material thing to check before depositing. Casinos commonly impose a maximum payout per transaction, a rolling weekly or monthly cap, and sometimes an instalment clause that pays a very large win in monthly tranches over months or years. Those clauses sit in the general terms rather than the bonus terms, so bonus-focused comparisons routinely miss them. Find the withdrawal limits section on each operator's own terms page and read it before you deposit, not after a win makes it relevant.
Is the ProvenPayouts Score a measurement of these operators?
No. It is an editorial judgement formed from publicly available information — published terms, licensing disclosures and what the operator does and does not make readable. It is not derived from deposits, withdrawals, timing runs or any first-hand account activity, because we do none of those things. Small gaps between two scores carry no measurement weight and should not decide anything. The verified arithmetic on this page is a stronger basis for a decision than the score is, and the conditions in each operator's live terms are stronger still.
Other matchups with these two
BitStarz vs 7Bit Casino
BitStarz wagers 40x on the bonus alone, 7Bit 35x on deposit plus bonus. At a 100 per cent match the lower number costs about 1.75x more to clear.
Vavada vs BitStarz
Both wager on the bonus alone — Vavada 35x, BitStarz 40x — so Vavada's bonus runs about $20 cheaper per $100. Its 2021-archived 10x cashout cap is the catch.
Stake vs BitStarz
BitStarz publishes 40x on the bonus alone, so it can be priced. Stake publishes a base but no multiplier, so it cannot. The arithmetic, and what stays unknown.
18+ only. Editorial comparison from public data and archived operator terms — not a first-hand withdrawal test. ProvenPayouts may earn commission on sign-ups; it never changes a score or an ordering, and operators we cannot monetise stay in the ranking anyway.