Yearly cost at three spending levels
| Monthly spend | KAST | Avici |
|---|---|---|
| $500 | $15 Standard | $39.60 Platinum |
| $2,000 | -$192 Standard | $75.60 Platinum |
| $5,000 | -$66 Standard | $147.60 Platinum |
Yearly cost: conversion, FX, ATM and fixed fees minus cashback. A minus sign means cashback outweighs fees. US dollars, 20% foreign spending, one $200 ATM withdrawal a month. The card cost calculator runs the same comparison with your own habits.
Where the money goes at $2,000 a month
| Line | KAST Standard | Avici Platinum |
|---|---|---|
| Top-up and conversion fees | $0 | $0 |
| Spending fees | $0 | $0 |
| Foreign exchange markup | $84.00 | $48 |
| ATM fees | $84 | $27.60 |
| Annual, monthly and subscription fees | $0 | $0 |
| Cashback | -$360 | -$0 |
| Yearly cost | -$192 | $75.60 |
Fees
KAST charges 0% to convert or top up and 1.75% on spending in a foreign currency. Avici charges 0% and 1%.
ATM withdrawals: KAST 2% + $3; Avici 0.65% + $1.
A virtual card costs nothing with KAST and $15 with Avici. A physical card costs $40 and $50. Neither card has an annual fee on its base tier.
Cashback and rewards
KAST cashback: 1.5% to 3%. Avici cashback: None.
KAST tiers: Standard: 1.5% on the first $2,000 a month; Premium ($1,000 a year): 2% on the first $10,000 a month; Private ($10,000 a year): 3% on the first $40,000 a month.
Avici tiers: Platinum: 0%; Signature ($20 a year after year one): 0%.
KAST: Premium and Private also earn KAST Points (1% and 2%), which this model does not value.
Avici: No card cashback is published. Signature adds Visa Signature benefits (lounge access via Visa Airport Companion, rental car cover, purchase protection, travel insurance) but no free lounge visits yet. New users get a $5 welcome bonus ($8 through a referral). Referrers earn 2% of a friend's card spend for the friend's first 90 days.
Availability and KYC
KAST does not publish a country list. KAST shows supported countries only in the app during sign-up.
Avici is offered in 49 countries, including Argentina, Australia, Brazil, Malaysia, Mexico, Philippines, Singapore, South Africa, Thailand and United Arab Emirates. Avici lists these regions for the card. In the US it is open in 31 states only (AL, AK, AR, CA, CO, CT, FL, HI, IL, IN, IA, KS, KY, ME, MA, MI, MN, MT, NE, NH, NJ, NY, NC, OK, PA, SC, TX, UT, VA, WV, WY). The list has "Dominica Republica" and "Dominicana", read here as the Dominican Republic. Residents of Belarus, mainland China, Cuba, India, Iran, Iraq, Israel, Myanmar, Nepal, Nicaragua, North Korea, Russia, Sri Lanka, Syria, Turkey, Ukraine, Venezuela and Vietnam are barred, and Avici says unlisted places may also be restricted. The card cannot be used in Cuba, Iran, North Korea, Russia, Syria, Ukraine or Venezuela. The card terms page also says "Non-US citizens only", which conflicts with the US state list.
KAST needs full KYC and Avici needs full KYC.
The card finder checks both cards against your country, KYC level and must-have features.
Limits, wallets and card types
KAST publishes ATM withdrawals of up to $750 a day.
Avici does not publish fixed spending or ATM limits.
KAST works with Apple Pay and Google Pay, and Avici works with Apple Pay and Google Pay. KAST and Avici issue a virtual card you can use straight away.
Custody and safety
KAST scores 44/100. Licensing: we could not confirm a licence for the card issuer on its own website. No incidents or enforcement actions found in the last 36 months. KAST's terms say accounts, cards and custody are provided by licensed partners and the card is issued "by the Issuer under license from Visa", without naming the issuer.
Avici scores 67/100. Licensing: holds a licence or registration outside the tier-one list (Issuer Third National (Nimbus LLC dba Third National) is a licensed money transmitter in Puerto Rico, NMLS #2612780, licence TM-0207). The card is issued through Third National. 2026-08-28: An attacker exploited an outdated Rain card-collateral contract and drained about $500,859 from the card balances of 1,685 Avici users (about $1.1 million across several programs). Self-custodial wallets were not affected. Avici and Rain committed to refund every user in full and Rain upgraded the affected deployments. Avici filed an FBI IC3 report. Avici Inc is a Delaware company with a named San Francisco address and published terms, privacy policy and docs, and the app has been on the iOS App Store since 2023 (app id 6465962039). The card holds no user funds in Avici's own accounts, but card balances sit in a Rain contract that was exploited in August 2026. Card spend is settled with Visa roughly weekly by liquidating the spent USDC.
Full reports: KAST safety check and Avici safety check.
About each card
KAST Card is a custodial Visa card from KAST. It tops up with USDT and USDC.
Avici Card is a self-custody Visa card from Avici Inc. It tops up with USDC.
Which card fits you
KAST fits if
- You want a higher cashback ceiling (up to 3%).
Avici fits if
- You want to keep crypto in your own wallet until each payment.
- You spend in foreign currencies often, since its FX markup is lower.
- You weigh licensing and fund segregation heavily, since it scores higher on our safety check.
Read more: KAST fees and details · Avici fees and details