Crypto Card Compare

KAST Card vs Solayer Emerald Card

Both cards target UK and EU residents. Here's the side-by-side on fees, cashback, and where each is available. Verified May 2026.

KAST Card
Solayer Emerald Card
Provider
KAST (Troia Corp)
Solayer Labs (Backed by Binance Labs)
Network
Visa
Visa
Funding model
Pre-funded debit (you load crypto/stablecoins to spend)
Self-custodial, funds stay in your wallet until spent
Cashback
Up to 2% in KAST Points (realistic ~1.5%)
Up to 1% in USDC + Emerald Points + future LAYER
Issuance fee
$0
$75
Monthly fee
$0
$0
FX markup
1.125%
1.5%
ATM fee
2%
,
Available in
United States, United Kingdom, Europe, Canada, Latin America, Asia-Pacific, and Middle East & Africa
United States, United Kingdom, Europe, Canada, Latin America, Asia-Pacific, and Middle East & Africa
Settlement currency
USD
USD

The verdict

Solayer Emerald Card is self-custodial, your funds stay in your wallet, while KAST Card holds your balance.

About KAST Card

KAST Card is a Visa debit card issued by KAST (Troia Corp), available to residents of United States, United Kingdom, Europe, Canada, Latin America, Asia-Pacific, and Middle East & Africa. It is a pre-funded debit card, you top up your card balance with crypto or stablecoins before spending. Cashback is Up to 2% in KAST Points (realistic ~1.5%).

Full KAST Card review →

About Solayer Emerald Card

Solayer Emerald Card is a Visa debit card issued by Solayer Labs (Backed by Binance Labs), available to residents of United States, United Kingdom, Europe, Canada, Latin America, Asia-Pacific, and Middle East & Africa. It is a self-custodial card, your funds remain in your wallet until each transaction is authorised. Cashback is Up to 1% in USDC + Emerald Points + future LAYER.

Full Solayer Emerald Card review →

Other comparisons

Last verified May 2026. How we collect this data · Affiliate links and direct links are presented equally.