KAST vs Tria
Two cards for spending many assets. KAST is custodial with 16-fiat settlement and tiered cashback; Tria is self-custodial across 1,000+ assets and 200+ chains with up to 6% and a 10% APY vault.
Quick verdict
KAST settles in 16 fiat currencies and pays 1.5% on its free K Card (up to 6% on costly premium tiers), but it's custodial. Tria is self-custodial, spends 1,000+ assets across 200+ chains directly, earns up to 6% on paid tiers plus up to 10% APY on stablecoins, but charges $20–$225/yr and is restricted in several countries (including the US and India).
Side-by-side
| KAST | Tria | |
|---|---|---|
| FX Fees | 0% USD · 2% other · +$0.10 low-value purchases | 0% on USD · 1.6% on other currencies |
| Payback | 1.5% on K Card · 2%–3% on paid premium tiers | 1.5% cashback, up to 6% on paid premium tiers |
| Annual Fee | $2 Virtual · $1,000/yr Premium · $10,000/yr Private | $20/yr Virtual · $90/yr Signature · $225/yr Premium |
| Physical Card | Plastic + gold-metal Luxe at top tier | Metal Signature card + instant virtual |
| Custody | Custodial | Self-custodial |
| Supported Currencies | Spends in 16 fiat (USD, EUR, GBP, SGD, JPY…) | 1,000+ assets across 200+ chains, settles USD |
| Region | 170+ countries / 150M+ Visa merchants | Not available in US, Russia, Turkey, India, Vietnam, Israel, Ukraine |
Verdict by dimension
Custody
Tria wins — self-custodial vs KAST's custodial model.
FX Fees
Tie on USD (both 0%); Tria is cheaper on other currencies (1.6% vs KAST's 2% plus $0.10).
Cashback
Close — both 1.5% base and up to ~6% on paid tiers; Tria adds a 10% APY stablecoin vault.
Asset & chain support
Tria wins — 1,000+ assets across 200+ chains vs KAST's USDT/USDC funding plus 16-fiat settlement.
Availability
KAST wins on reach (170+ countries); Tria excludes the US, India, Russia, Turkey, Vietnam, Israel and Ukraine.
Choose KAST if…
you value multi-fiat settlement and a free entry tier, and custodial is acceptable.
Choose Tria if…
you hold assets across many chains, want self-custody, and your spend justifies the annual fee.