Head to head
Wirex One vs Kast
Both cards run on the same benchmark test, so this compares deducted cost rather than advertised rates.
| Metric | Wi Wirex One | Ka Kast |
|---|---|---|
| Overall rank | #4 of 10 | #7 of 10 |
| Gross FX spread | 1.18% | 7.93% |
| Net cost on test | $1.50 all-in | $1.60, expensive on small tickets |
| Base cashback | 0.5% paid in WXT | 1.5%, locked for 14 days |
| Custody | Self-Custodial | Custodial |
| Virtual card | Free | $2 |
| Physical card | Locked behind Premium tiers | ~$40 + delivery |
| Spend limit | High, tier and source-of-wealth dependent | Unlimited daily purchases |
| ATM withdrawals | Free up to ~$250/month, 2% thereafter | $3 flat + 2% of the withdrawal |
| Setup time | ~12 minutes | ~10 minutes |
| KYC steps | 5 | 6 |
| Score | 8.1/10 | 6.3/10 |
Wirex One
Wirex is highly competitive. A 1.18% all-in spread puts it right next to Coca and Bitget as one of the cheapest cards for spending Rands in South Africa. The downsides are volatile WXT-denominated cashback and strict proof-of-address onboarding.
Kast
Kast works if you spend heavily in USD or move large amounts on Solana. For daily small-ticket ZAR spending, coffee, groceries, the flat low-transaction fee makes it one of the most expensive cards you could use in South Africa.
Who ranks these cards
I'm Tristyn Pawson, founder of ConsistenC.xyz. Over the last five years I've worked on marketing, development and growth across five crypto cards and neobanks, building at least three of them from scratch.
Alongside that I've run in-depth research on 20+ crypto banks to understand what actually makes someone keep a card in their wallet. These rankings reflect that: which problems are tolerable, and which ones are genuine deal breakers.
- Years in market
- 5
- Cards built on
- 5
- Neobanks researched
- 20+