Home › Comparisons › KAST vs ether.fi Cash
KAST vs ether.fi Cash
KAST or ether.fi Cash? This page puts the same fields from both reviews side by side — every number from each issuer's official pages, checked 2026-11-10 — and gives a verdict for three uses: advertising, subscriptions and large spending.
Side-by-side comparison
| Item | KAST | ether.fi Cash |
|---|---|---|
| Operator | — | ether.fi |
| Network | Visa | Visa |
| Card types | Virtual, Physical | Virtual, Physical |
| Virtual issuance | — | 0 USD |
| Monthly fee | 0 USD | — |
| Top-up fee | — | — |
| Spend / conversion | — | — |
| FX fee | — | 0.5% |
| ATM | max 250 USD per withdrawal including fees, max 3 withdrawals in a rolling 24 hours | — |
| Total cost (non-USD merchant) | — | ≥0.5% |
| Mainland China residents | — | Officially not eligible |
| Documents stated | Business docs | ID card / Passport / Passport+POA |
| Restricted regions | — | Mainland China (not on the official eligible-country list) |
| 3DS | — | ✓ Supported |
| Meta / Google / TikTok | — | — |
| Limits | No daily/monthly cap | — |
| Limit notes | Website: no daily or monthly cap on card spending, up to your wallet balance; large transactions may trigger a compliance check | Users can set their own daily / monthly limits |
| Bulk issuing | — | — |
| Top-up chains | Ethereum, Solana, Polygon, Arbitrum, TRON | — |
| Source | Official fee page · 2026-11-10 | Official fee page · 2026-11-10 |
← →
Key differences
- Mainland China residents: ether.fi Cash officially not eligible.
KAST
KAST: KAST is a Visa card built around spending stablecoins. Generous limits and broad chain support, but confirm spending-side fees in the in-app preview. Accepts business docs. Best for stablecoin holders and small businesses that need high spending capacity; not for users who need frequent large ATM withdrawals. Read the full review
ether.fi Cash
ether.fi Cash: ether.fi Cash differs from most cards in our dataset: it is a credit card with two modes, Borrow and Direct Pay, using on-chain assets as the basis for your limit. The most transparent document policy of the group, but only open to listed jurisdictions. Issuance 0 usd; total cost at non-usd merchants ≥0.5%; accepts id card / passport / passport+poa; mainland china residents: officially not eligible. Best for holders of on-chain assets living in supported regions such as Hong Kong, Taiwan, Singapore, Japan or Korea; not for mainland China residents; beginners unfamiliar with on-chain borrowing risk. Read the full review
Verdict by use case
Advertising
Neither publishes official ad-platform statements or targets multi-card ad use, so ad teams shouldn't choose between these two.
AI and software subscriptions
Choose ether.fi Cash, provided you're in an officially eligible region. It states 3DS support, adds no FX margin on USD/EUR and 0.5% on other currencies at Core tier.
Large spending
Choose KAST. Its website says card spending has no daily or monthly cap beyond your wallet balance; ether.fi Cash is a credit card whose Borrow Mode may accrue interest. Note KAST's ATM cap of 250 USD per withdrawal.
Choose by your situation
- If you live in mainland China: KAST is not explicitly excluded, but get written confirmation from the issuer first.
- If you need a physical card or ATM cash: KAST and ether.fi Cash offer a physical card; withdrawal fees are as listed in the reviews.
- If you need many cards for separate accounts or projects: neither publishes a multi-card or bulk-issuing feature.
- If you top up via TRC20: KAST officially lists TRON / TRC20.
Conclusion
Both are stablecoin spending cards but of different kinds: KAST is prepaid with generous limits and many chains, ether.fi Cash is a credit card with the most transparent document policy. Mainland China is not on ether.fi's eligible list.
Whichever you pick, confirm first that your residence and documents fall within the issuer's policy, and test with a small amount before relying on it.
Related reading
For each card's full calculation and document details, see the KAST and ether.fi Cash reviews; to rule out cards by residence first, see the KYC policy table. Other comparisons:
- RedotPay vs Bybit Card
- ExCards vs KripiCard
- RedotPay vs PokePay
- Bybit Card vs Crypto.com Visa Card
- MetaMask Card vs ether.fi Cash
FAQ
Which is cheaper, KAST or ether.fi Cash?
On our standard basis (open a card, top up 1,000 USDT, spend at a non-USD merchant), KAST costs — and ether.fi Cash ≥0.5%; "≥" marks a lower bound.
Can mainland China residents use KAST or ether.fi Cash?
KAST: —; ether.fi Cash: Officially not eligible. See the KYC policy table for each card.
For advertising, KAST or ether.fi Cash?
Neither publishes official ad-platform statements or targets multi-card ad use, so ad teams shouldn't choose between these two.
A U-card is only for passing payments through: top up only what you will spend, and never keep a large balance on the card.