/ 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, European Economic Area, Canada, Latin America, Asia-Pacific, and Middle East & Africa
United States, United Kingdom, European Economic Area, 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, European Economic Area, 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, European Economic Area, 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.