On this page (7 sections)
BOOST20 is Rainbet's signup code, unlocking a 20% rakeback boost — a multiplier applied to the rakeback rate an account already earns, not a deposit match or free spins.
What BOOST20 multiplies, exactly
Rakeback is a share of the house margin your turnover generates, paid back as balance. BOOST20 does not create that rate; it multiplies whatever rate your VIP tier already gives you by 1.2. A 5% base rate becomes 6%. A 10% base rate becomes 12%. The boost is proportional, so its cash value depends entirely on the base rate underneath it — a number this calculator asks you to supply, because Rainbet does not publish a fixed base-rate table for every tier.
That is also why a rakeback boost cannot be judged from the headline alone. Twenty percent of a small number is a small number. The only way to know what it is worth to you is to run your own turnover and rate through the maths, which is what the tool below does.
The Rainbet VIP calculator
Enter your own base rate — it is not published as a fixed public figure, so we do not guess one for you.
The boost field is pre-filled at 20%, because that is the verified figure BOOST20 unlocks. Every other number is yours to enter, because Rainbet does not publish a single fixed base rate or tier table as a quotable figure.
The formula behind each number
Four steps, no hidden constants
House margin generated = turnover × (house edge ÷ 100). Rakeback without boost = margin × (base rate ÷ 100). Rakeback with BOOST20 = margin × (base rate ÷ 100) × (1 + boost ÷ 100). Rakeback as % of expected loss = boosted rakeback ÷ margin × 100 — which, by construction, equals your boosted rate.
That last line is worth sitting with: rakeback as a share of your expected loss is mathematically the same figure as your boosted rate. The calculator shows it anyway because framing it against expected loss, in cash terms, makes the trade-off concrete instead of abstract.
Worked scenario: a month of steady play
Take $50,000 of monthly turnover, a 3% average house edge across the games played, and a 5% base rakeback rate. House margin generated is $50,000 × 3% = $1,500. Rakeback without the boost is $1,500 × 5% = $75. With BOOST20, it becomes $75 × 1.2 = $90 — a $15 difference, or 6% of the $1,500 expected loss, for the month.
Double the base rate to 10% with everything else unchanged and the boost's cash value doubles too: $150 without the boost, $180 with it, an extra $30. The boost percentage never moves. Its cash value scales entirely with the rate it is multiplying.
Where this sits on the VIP ladder
Rakeback rates rise with volume, so the base rate you enter above should reflect your actual tier, not the ceiling advertised to top depositors. Exact thresholds and rates per tier live inside your own account's VIP panel, not in a published table. Our full Rainbet VIP and rakeback breakdown covers how the ladder is structured in general terms.
What this calculator cannot tell you
- Your exact VIP tier thresholds and base rate — only your account screen has those, we deliberately do not invent them
- Whether BOOST20 has a time limit on your account — check the promotions panel for the current terms
- Whether rakeback pays instantly or accrues on a schedule — confirm in your account's rewards settings
- Anything about a deposit bonus — BOOST20 is not one, so it carries no wagering requirement to model with the wagering calculator
Licence, geo-restrictions and playing safely
Licensing. Access is blocked in a number of countries and US states, and the list is maintained by the operator rather than published as a stable document. The current restricted list and licence details live on the operator’s own terms page — read them before you register.
Your side of it. Crypto casinos settle fast, which is exactly what makes them easy to overplay. Before your first deposit at Rainbet, set a deposit cap and a session timer in the account settings — not in your head.
- Deposit limits and self-exclusion tools live in account settings, not support chat
- A losing session is not a signal to raise the stake — it is a signal to stop
- Bonus turnover targets are not a reason to keep playing past your limit
- Free, confidential help: BeGambleAware and Gambling Therapy
Frequently asked questions
What does the Rainbet VIP calculator actually compute?
It turns your monthly turnover and the average house edge of the games you play into a margin figure, then applies your rakeback rate to that margin — once at your base rate, and once with the BOOST20 20% boost multiplying it.
Where do I find my real base rakeback rate?
In your account's VIP or rewards panel, not in marketing copy. Rainbet does not publish a single fixed rate for every tier as a quotable public figure, so the calculator asks you to enter your own — check your account's VIP panel for the current number.
Does BOOST20 change my house edge?
No. It changes what share of the house's margin is paid back to you, not the game's underlying edge. A boosted rakeback rate is a discount on the edge, never a reversal of it.
Why is rakeback shown as a percentage of expected loss?
Because that framing answers the only question that matters: of the money you are mathematically expected to lose over that turnover, what share comes back as rakeback. It is the same number as the boosted rate, expressed the way it actually affects your bankroll.
Does the boost apply to deposits as well as turnover?
No. BOOST20 multiplies a rakeback rate, which is paid on turnover and house margin, not on the size of a deposit. Depositing more without playing more does not change the calculator's result at all.
Is a bigger boost always better than a bigger base rate?
Not necessarily. A 20% boost on a small base rate is still a small number. Run your actual base rate through the tool before assuming the word 'boost' means the offer is generous.