About Us

Online Casinos is an independent research and comparison site covering online casinos for readers in the United States. We exist for one reason: bonus offers are written to look big, and the terms that decide whether they are worth anything are written to be skimmed past. Our job is to read the second part and tell you what it means.

We are not a casino, we do not take deposits, and we do not accept bets. We publish reviews, explainers and top lists — built from operator terms, published licensing information and publicly verifiable sources — so you can compare offers on the numbers that actually change what you keep.

How we pay for this, in plain terms

Online Casinos earns money through affiliate commission. If you follow a link from one of our pages to a casino and open an account, the operator may pay us. That is the entire business model, and you should know it before you read another line.

Commission does not buy a position on our lists, and it does not move an editorial rating. Operators cannot pay to be included, pay to be ranked higher, or pay to have a limitation removed from a write-up. Where a site we earn from has a weak bonus term, we say so on the same page that links to it. Our editorial scores are ours — they are not customer-review averages, and they are not supplied by the operators.

Why this site leads with the biggest bonus

Most readers arrive here comparing headline offers, so that is where we start — but we treat the headline as a question, not an answer. A 600% match is only larger than a 200% match if you can meet the playthrough, if the game you want to play contributes to it, and if the cashout cap does not strip the winnings back out.

So every bonus we list is read against five things:

• Wagering requirement — how many times the bonus (or bonus plus deposit) must be wagered before a withdrawal is possible
• Maximum bonus bet — the per-spin or per-hand cap while a bonus is live, which is the term players breach most often
• Cashout limit — a ceiling on what a bonus can ever pay out, common on larger match percentages and on free spins
• Expiry — how long you have to clear it before the balance is voided
• Game contribution — slots usually count 100%, while blackjack, roulette and baccarat often count 10% or not at all

The offers on our lists, and what we flag about them

Below are three of the top-ranked offers on Online Casinos and why each sits where it does. Full terms always come from the operator, and they can change without notice — check the current bonus page before you deposit.

Raging Bull — 410% up to $10,000 + 50 Free Spins

This is our highest-rated entry at 10.0 because it leads the site on headline size: a very high match percentage paired with a large stated maximum and a free spins component on top. For a reader whose search begins with "biggest bonus," it is the most direct answer on the page.

The limitation is the one that comes with every offer of this shape. Reaching the top of a $10,000 maximum requires a deposit most players will never make, so the realistic value is set by your own deposit size, not the advertised ceiling. High-percentage matches also tend to carry the heaviest playthrough and the strictest maximum-bet rules, and free spins are usually tied to named games with their own winnings cap. Read the wagering multiplier and the spins' cashout limit before you treat this as the largest offer available to you.

Magician Bet — 101% No Wagering

Rated 9.9, and included precisely because it is the opposite argument. The percentage is modest next to the rest of the list, but "no wagering" means the bonus is not locked behind a playthrough multiplier — which is structurally the rarest term in this market and often worth more than a headline three times the size.

The trade-off is ceiling. A 101% match will not produce the balances a 400% or 600% match can, and "no wagering" almost always arrives with other constraints in its place — a capped maximum bonus amount, a short validity window, or a limited set of eligible games. Confirm what replaces the wagering requirement rather than assuming there is nothing attached.

Slots of Vegas — 375% Bonus + 50 Free Spins on Cash Chaser

At 9.8, this one earns its place for structure rather than size: a substantial match paired with spins on a specified title, which makes the free spins portion easier to evaluate than an unnamed "50 spins" credit. You can look up the game's volatility and RTP before you commit.

The drawback is that the same specificity narrows it. Spins locked to a single slot are worth little if that game does not suit you, and tying spins to one title usually comes with a fixed spin value and a separate winnings cap from the main match. As with any large percentage offer, check whether the wagering applies to the bonus alone or to deposit plus bonus — the difference can double the amount you must stake.

Comparing the headline offers

Casino	Headline offer	Editorial rating	Offer type
Raging Bull	410% up to $10,000 + 50 Free Spins	10.0	Match + spins
Magician Bet	101% No Wagering	9.9	Match, no playthrough
Slots of Vegas	375% + 50 Free Spins on Cash Chaser	9.8	Match + game-specific spins
Uptown Aces	600% for new players	9.8	Match
Card Crush	Instant welcome reward: 2 mystery coins & 5 cards	9.5	Social-style reward
Zumba Cards	250% deposit bonus up to 250 SC	9.5	Sweeps-style coin bonus
BetUS	200% up to $4,000 for new players	9.2	Match
Amazon Jackpots	4 posters + 40 free SC + bonus wheel for $20	9.0	Purchase-linked package
Slots and Casino	500% up to $2,500 x3	8.8	Multi-deposit match
Bets.FM	225% up to 1 BTC + 225 free spins	8.8	Crypto match + spins

Ratings are our own editorial scores. They are not customer reviews and they are not a prediction of your result.

What a bonus costs you before it pays anything

No welcome bonus on this site is free money. Every match offer requires a qualifying deposit of your own, and that deposit is at risk in the same way any other stake is. We never describe a deposit-linked offer as free, and we would rather you walked away from an offer than chased a playthrough to unlock it.

The money questions we look at for every operator we write about:

• Minimum deposit — the smallest amount that activates the offer, which is often higher than the site's general minimum
• Payment methods — commonly debit cards, credit cards (acceptance varies by issuer for gambling transactions), ACH bank transfers, wire transfers, e-wallets where offered, prepaid cards, and cryptocurrency at some operators. PayPal availability is limited and depends on the operator and your state, so verify it rather than assuming
• Fees — deposits are usually free; withdrawals may carry a processing fee, particularly on wires and on repeat cashouts within a period
• Minimum and maximum withdrawal — both matter, and weekly or monthly caps can stretch a large win over months
• Withdrawal timing — pending or reversal periods first, then the method's own transit time. Advertised speeds are what the operator states, not results we have measured
• KYC — identity, address and payment-ownership checks, plus source-of-funds questions on larger sums. Completing verification early is the single easiest way to avoid a delayed cashout

A worked example of how a match is actually cleared: deposit $100 on a 200% match and you hold $300, of which $200 is bonus. If the wagering is 30x the bonus, you must stake $6,000 before the balance converts. At a $5 maximum bonus bet, that is 1,200 spins. If a $1,000 cashout cap applies, nothing above that converts regardless of what you win. Those numbers are illustrative — the operator's own terms are the ones that count.

The games we assess behind the offers

A bonus is only as good as what you can spend it on, so our reviews describe the library in the categories that matter for clearing and for playing:

• Slots — usually the only category contributing 100% to wagering. We note RTP where an operator publishes it, and volatility, since a high-volatility game can clear a playthrough or empty a balance far faster than a low-volatility one
• Progressive jackpots — pooled prizes that are frequently excluded from bonus play entirely
• Table games — blackjack, roulette and baccarat, typically low- or zero-contribution under bonus terms even when they offer better odds in normal play
• Live dealer — human-dealt tables streamed in real time, often excluded from welcome bonuses and worth checking before you count on them
• Sweepstakes-style play — some operators on our list use coin or card models rather than direct cash wagering, with different rules around redemption. We label these rather than treating them as identical to cash casinos

We also record which software providers supply the games and whether the operator states that outcomes are produced by a certified random number generator. And we cover the mobile side — browser play versus a dedicated app, and whether the full library and the cashier are available on a phone.

The other product lines these operators run

Several brands we cover are not casino-only. BetUS, for instance, is known primarily for sports betting alongside its casino, and offers of that kind often come with separate bonus balances, separate wagering rules and separate rollover maths. Elsewhere on our lists you will find poker rooms, bingo, racebooks and crypto-focused cashiers running beside the slots lobby.

This matters for one practical reason: a sportsbook bonus and a casino bonus rarely share terms, and wagering cleared on one side usually does not count toward the other. If you plan to use both, confirm whether the operator runs a single wallet or split balances before you opt in.

US legality, licensing and who can play

You must be at least 21 in most US jurisdictions to gamble online, and 18 in a small number — the operator and your state set the threshold. Online gambling in the United States is regulated primarily at state level, not federally. A handful of states license real-money online casinos and issue permits to named operators; many do not, and in those states real-money casino play is either prohibited or unaddressed by statute.

There is an important distinction we hold to throughout the site: an operator accepting players from your state is not the same as being licensed to serve your state. Offshore sites may take US deposits without holding a US license, which changes the protections available to you if something goes wrong — dispute routes, complaint escalation and enforcement all depend on who regulates the operator. Sweepstakes and social casino models operate under different rules again, and their availability varies state by state.

Before you sign up, check whether the operator names a regulator, whether your state is listed as eligible in the terms, and what complaint procedure the operator publishes. Our reviews report licensing information as the operator and the relevant authority state it; where a claim cannot be verified, we say it is unverified rather than repeating it.

Nothing on this site is legal advice. We are not a regulator, and no page here can make gambling safe or make a withdrawal certain.

How we build a review

We research and verify; we do not claim to have deposited, played or withdrawn. Every review follows the same sequence:

1. Confirm the operator's stated licensing and ownership, and record which states the terms say are eligible
2. Read the bonus terms in full — wagering, maximum bet, cashout cap, expiry, game contribution and excluded titles
3. Record the cashier: deposit methods, minimums, withdrawal minimums and limits, stated processing times, and any fees
4. Note the verification process, including what documents are requested and at what point source-of-funds checks are triggered
5. Map the game library by category and note the software providers and any published RTP information
6. Check support channels, mobile access, and the responsible gambling tools on offer — deposit limits, loss limits, session reminders, cooling-off and self-exclusion
7. Score the operator, write at least one genuine limitation into the review, and date the findings

Findings are dated because they go stale. Bonus percentages, wagering multipliers and state availability change without notice. The date stamped on a page tells you when we last checked it; the operator's own terms page is always the authority on the day you deposit.

Playing within limits

Gambling is entertainment with a cost, not a way to make money or fix a financial problem. If you are chasing losses, borrowing to play, or hiding how much you spend, those are signals worth acting on. Every reputable operator offers deposit and loss limits, time-outs and self-exclusion, and blocking software can restrict access at the device level. Our responsible gambling guide covers the tools and the national support services available in the US, including confidential helplines.

Who writes this, and how to reach us

Editorial content on Online Casinos is produced by our review team, currently led by Mason Brooks, working to the process above. Pages carry a last-updated date so you can judge how current the information is — this page was last fact-checked on September 25, 2026.

If a bonus term we have published no longer matches what an operator shows, if you think a rating is wrong, or if you want to tell us about a withdrawal dispute, we want to hear it. Corrections get made and dated. Use the contact page to reach the editorial team, and our terms and conditions set out how the site and its content may be used.

The most useful thing you can do with this site is treat the headline number as the start of the comparison rather than the end of it. Open the offer you like the look of, read the wagering requirement and the cashout cap, and decide whether the deposit it asks for is money you are comfortable losing. If the answer is no, the biggest bonus on the page is still not the right one.