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Kast, Ready Card, and TapX are all self-custodial crypto cards with global ambitions — but they optimize differently. Kast leads on rewards (8% cashback + staking boosts), Ready leads on fee elimination (0% FX, simple model), and TapX leads on asset breadth (70+ cryptocurrencies).
Kast vs Ready vs TapX Card: Comparison
| Feature | Kast Card | Ready Card | TapX Card |
|---|---|---|---|
| Network | Visa | Mastercard | Visa + Mastercard |
| Custody | Self-custodial ✅ | Self-custodial ✅ | Self-custodial ✅ |
| Cashback | Up to 8% | 0.5% STRK | None (yet) |
| FX Fee | Not specified | 0% ✅ | 0% ✅ |
| Staking | SOL staking for boost | None | None |
| ATM | Varies by region | €200/mo free | Varies by plan |
| Assets | USDC, SOL, ETH, BTC | BTC, ETH, USDC | 70+ cryptos |
| Countries | 160+ ✅ | Global | Global |
| Review | Click here | Click here | Click here |
Kast Card — Best Rewards of the Three
Kast offers the highest cashback potential here — up to 8% with SOL staking boosts adding a gamified rewards multiplier. Available in 160+ countries. Supports USDC, SOL, ETH, and BTC. The Solana ecosystem integration (staking SOL for reward boosts) targets active Solana users specifically. FX fee structure isn’t fully transparent — verify before applying for international use. Best for Solana ecosystem users who want the highest reward ceiling with self-custody.
Ready Card — Best Zero-Fee Self-Custodial Card
Ready Card prioritizes simplicity and fee elimination: 0% FX, self-custodial Mastercard, clean interface. 0.5% STRK (Starknet) cashback with auto-purchase DCA option. €200/month free ATM. Supports BTC, ETH, and USDC. For self-custody users who want zero FX cost globally with a simple reward model, Ready is the most transparent option. No staking requirements, no complex tier mechanics.
TapX Card — Best for Multi-Asset Portfolios
TapX supports 70+ cryptocurrencies — the widest asset range of the three. Both Visa and Mastercard network support. 0% FX fees. Physical + virtual card options. Self-custodial. No cashback rewards currently. Best for users with diversified crypto portfolios who want to spend from any asset without consolidating into a single token. The dual Visa/Mastercard coverage maximizes terminal acceptance globally.
Verdict
Best rewards: Kast (up to 8% + SOL staking boosts, 160+ countries). Best fee elimination: Ready Card (0% FX + simple model + transparent rewards). Best for multi-asset portfolios: TapX (70+ assets + dual network support + 0% FX).
Bottom Line: All three are self-custodial with global reach. Kast leads on rewards ceiling if you’re in the Solana ecosystem. Ready leads on fee transparency and simplicity. TapX leads on asset diversity. For most users: Ready Card’s 0% FX + straightforward model wins for daily use; Kast wins if you prioritize maximum cashback and hold SOL.
📋 Reviews: Kast | Ready Card | TapX
📊 Related: Non-Custodial Cards | Zero-Fee Cards
⬆️ Best Crypto Cards 2026
