KASTKAST
84
Side-by-side card comparison
KAST vs Solid: overall score versus use-case fit
Solid Card has the higher Overall Score by 1 point (85 vs 84). KAST Card looks stronger for Travel, Lowest fees, and Transfers, while Solid Card comes out ahead for Cashback and Funds control.
Information checked Oct 11, 202640 official sources reviewed
01 · Overall score versus use-case fit
Solid Card is the better all-round starting point
Solid Card has the higher Overall Score in this comparison. KAST Card may be the better fit for Travel, Lowest fees, and Transfers. A score cannot tell you whether a provider will accept your application or whether every feature will be available where you live, so check the latest provider terms before signing up.
OverallKAST84Solid85Higher score
CashbackKAST75Solid89Higher score
TravelKAST93Solid58Higher score
Funds controlKAST71Solid94Higher score
Lowest feesKAST82Solid81Higher score
TransfersKAST100Solid78Higher score
Choose KAST Card if travel and lowest fees matter most
KAST Card comes out ahead for Travel, Lowest fees, and Transfers in this comparison. It is worth a closer look if those are the parts of a card you expect to use most.
- Transfers span crypto, Tag and bank payouts
- Physical, virtual and phone-wallet card access
- Free tier starts with cashback
Choose Solid Card if cashback and funds control matter most
Solid Card comes out ahead for Cashback and Funds control in this comparison. It is worth a closer look if those are the parts of a card you expect to use most.
- Savings can stay productive while spending
- Higher rates in selected categories
- Eligible ACH/wire receive details
Where each card has the edge
The overall leader does not win every use case, so the reason you want the card matters here.
- Overall Score
- KAST84Solid85
Solid Card has the higher Overall Score by 1 points.
- Entry cost & FX
- KAST$0 plan · 0.5–1.75% FXSolid$0 plan · 0–2% FX
KAST Card has the lower published FX fee (0.5–1.75% vs 0–2%).
- Purchase rewards
- KAST1.5% base · up to 3%Solid3% base · up to 5%
Solid Card has the higher published base cashback rate (3% vs 1.5%).
- Funds control
- KASTCustodial balanceSolidSelf-controlled wallet
KAST Card uses a custodial balance setup, while Solid Card uses a self-controlled wallet setup. Neither approach is always better, so choose the level of control you are comfortable with.
- Everyday access
- KASTVirtual + Physical · Apple Pay, Google PaySolidVirtual · Apple Pay, Google Pay
KAST Card lists more card formats and phone-wallet options (4 vs 3).
- Money movement
- KAST5 stablecoins · Stablecoin transfers; KAST Tag; Global USD SWIFT payout, USD local payout, EUR SEPA payout, Other local currency payoutsSolid4 stablecoins · Stablecoin transfers
KAST Card lists more stablecoins and ways to send money out (12 vs 6).
02 · Read the shortlist
A closer look at the split decision
Start with the strengths that drive each use-case result, then test them against costs and access.
- Cashback
- 1.5%-3%
- Plan cost
- $0
- FX fee
- 0.5–1.75%
- ATM fee
- $3 + 2%
- Card formats
- Virtual, Physical
- Wallet payments
- Apple Pay, Google Pay
- Receive methods
- 32 crypto · 6 fiat
- Payout methods
- 2 crypto · 13 fiat
- Cashback
- 3%-5%
- Plan cost
- $0
- FX fee
- 0–2%
- ATM fee
- Not available
- Card formats
- Virtual
- Wallet payments
- Apple Pay, Google Pay
- Receive methods
- 10 crypto · 17 fiat
- Payout methods
- 3 crypto · 0 fiat
Current signup offers
Signup value available today
A welcome offer can improve the value of your first months with a card. Check the eligibility rules, qualifying actions and deadline first. Signup offers are excluded from card scores.
KAST Card
20% off
20% off your first subscription
- Discount is automatically applied at checkout.
Offer terms can change. Check the current KAST referral programme before signing up.
Solid Card
$25 in FUSE
$25 in FUSE after $150 of qualifying card spend
- Sign up through the referral link, verify identity and activate the Solid Card.
- Within 30 days of signup, spend $150 on eligible everyday purchases at three or more shops, at least $10 total at each. Purchases below $2 do not count.
- After qualification, make one more eligible purchase of at least $10 before payout.
Solid Card promo code15QRE
The $25 value converts to FUSE at payout; FUSE can lose value. October 8 eligibility changes apply to all unpaid rewards, including already-qualified referrals. Referrals before September 8 retain $15 USDC / $75 spend, subject to the updated eligibility rules. Maximum 50 referral rewards. Solid can change or end the programme.
Partner links may earn us a commission. Read our affiliate disclosure for how these links work.
03 · Compare the details
See how the trade-offs line up
Comparable figures receive a marker; missing or unverified details stay visible instead of becoming an assumed advantage.
Best known Not disclosed
CardsKAST CardOverall84Solid CardOverall85
KAST CardOverall84Solid CardOverall85Scores
6 fields- Overall Score
- KAST Card84Solid Card85
- Cashback score
- KAST Card75Solid Card89
- Travel score
- KAST Card93Solid Card58
- Funds control score
- KAST Card71Solid Card94
- Lowest fees score
- KAST Card82Solid Card81
- Transfers score
- KAST Card100Solid Card78
Strengths & trade-offs
2 fields- Strengths
- KAST CardTransfers span crypto, Tag and bank payouts, Physical, virtual and phone-wallet card accessSolid CardSavings can stay productive while spending, Higher rates in selected categories
- Trade-offs
- KAST CardNon-USD FX can exceed entry cashback, ATM use adds two chargesSolid CardHigher tiers require payment or locked FUSE, ATM availability is still being checked
Costs
7 fields- Plan cost
- KAST Card$0Solid Card$0
- FX fee
- KAST Card0.5–1.75%Solid Card0–2%
- Top-up fee
- KAST Card0%Solid Card0%
- Card spending fee
- KAST Card0%Solid Card0%
- ATM fee
- KAST Card$3 + 2%Solid CardNot available
- Virtual card
- KAST CardFree first twoSolid CardVirtual Visa in app after KYC; activation requires at least $10 in Wallet or Savings
- Physical card
- KAST CardFree; $40 shippingSolid CardPhysical card not listed
Plans
2 fields- Available plans
- KAST Card3 plans: Standard, Premium, PrivateSolid Card3 plans: Core, Prime, Ultra
- Top cashback plan
- KAST CardPrivate: 3%Solid CardUltra: 5%
Everyday use
8 fields- Network
- KAST CardVisaSolid CardVisa
- Card formats
- KAST CardVirtual, PhysicalSolid CardVirtual
- ATM withdrawals
- KAST CardAvailableSolid CardNot available
- Mobile wallets
- KAST CardApple Pay, Google PaySolid CardApple Pay, Google Pay
- Apps
- KAST CardiOS, AndroidSolid CardiOS, Android, Web
- Daily spending limit
- KAST CardNo capSolid CardShown in app
- Monthly spending limit
- KAST CardNo capSolid CardShown in app
- ATM limit
- KAST CardLimits shown in appSolid CardNot disclosed
Funding & transfers
5 fields- Networks
- KAST CardSolana, Ethereum, Tron, Polygon, BNB Chain, Arbitrum +7Solid CardFuse, Ethereum, BNB Smart Chain, Polygon, Base, Arbitrum
- Crypto deposits
- KAST CardStablecoins: USDT, USDC, USDe, PYUSD, RLUSD; Other crypto: BTC, ETH, SOL, XRP, AAVE +22Solid CardStablecoins: soUSD, USDC, USDT, FUSE, EURC; Other crypto: soETH, VOLT, WBTC, WETH, WFUSE
- Fiat deposits
- KAST CardUSD bank transfer, EU bank transfer, BRL PIX deposit, MXN SPEI deposit +2Solid CardUSD virtual account, TransFi ARS funding, TransFi COP funding, TransFi BDT funding +13
- Transfers
- KAST CardStablecoin transfers; KAST Tag; Global USD SWIFT payout, USD local payout, EUR SEPA payout, Other local currency payoutsSolid CardStablecoin transfers
- Payout currencies
- KAST CardUSD, EUR, AED, SAR, JPY, INR, PHP, THB +4Solid CardNot disclosed
Rewards
3 fields- Base cashback
- KAST Card1.5%Solid Card3%
- Max cashback
- KAST Card3%Solid Card5%
- Reward currency
- KAST CardUSD cashbackSolid CardUSDC cashback
Earn
5 fields- Advertised APY
- KAST CardUp to 7% APYSolid CardUp to 14% APY
- How it works
- KAST CardOptional earn vaultSolid CardBorrow against collateral, Optional earn vault
- Separate deposit
- KAST CardYesSolid CardYes
- Use balance for spending
- KAST CardNoSolid CardNo
- Lock-up
- KAST CardNoSolid CardNot disclosed
Trust & availability
6 fields- Custody
- KAST CardCustodialSolid CardSelf-custody
- Control until payment
- KAST CardProvider controls fundsSolid CardYou keep control
- Card issuer
- KAST CardThird NationalSolid CardRain, Third National, Wirex
- Card processing
- KAST CardTazapaySolid CardFuse Network Ltd
- Custody / key management
- KAST CardBitGoSolid CardNot disclosed
- Programme operator
- KAST CardTroia CorpSolid CardFuse Network Ltd
Sources
2 fields- Official sources
- KAST Card20Solid Card20
- Last reviewed
- KAST CardOct 6, 2026Solid CardOct 11, 2026
04 · The trade-off
Solid Card is the stronger all-round choice
Solid Card finishes ahead with an Overall Score of 85 versus 84 for KAST Card. KAST Card has the lower published FX fee (0.5–1.75% vs 0–2%). Solid Card has the higher published base cashback rate (3% vs 1.5%).
KAST Card still comes out ahead for Travel, Lowest fees, and Transfers, which may matter more than the overall result if that is how you plan to use the card. KAST Card uses a custodial balance setup, while Solid Card uses a self-controlled wallet setup. Neither approach is always better, so choose the level of control you are comfortable with.
KAST Card lists more stablecoins and ways to send money out (12 vs 6). Before applying, confirm availability in your country and recheck the provider's current fees and reward conditions.
If one card now looks like the better fit, you can check the latest application terms on the provider site or read our full KAST Card and Solid Card reviews first.
Continue with
KAST Card
Continue with
Solid Card
05 · Common questions
KAST vs Solid FAQ
Is KAST or Solid better overall?
Solid Card has the higher Overall Score (85 vs 84). That does not make it better for everyone: your preferred fees, rewards, way of holding funds and country availability can change the practical choice.
Which has lower fees, KAST or Solid?
KAST Card has the lower published FX fee (0.5–1.75% vs 0–2%). Compare plan, FX, card-spend, top-up and ATM charges separately because one fee does not represent the full cost.
Which has better cashback, KAST or Solid?
Solid Card has the higher published base cashback rate (3% vs 1.5%). Maximum rates may depend on tiers, caps, categories or other conditions, so the entry rate and reward asset matter too.
How do KAST and Solid differ on custody?
KAST Card uses a custodial balance setup, while Solid Card uses a self-controlled wallet setup. Neither approach is always better, so choose the level of control you are comfortable with.
How current is this KAST vs Solid comparison?
The latest information check for these two cards was October 11, 2026, using 40 official sources in total. Each full card review lists its own check date, sources and anything the provider has not clearly disclosed.