Krak Vaults and the Balance You Need for Cashback

Two Krak features point in the same direction: cashback tiers based on your 30-day average balance, and Vaults offering a variable yield on balances that would otherwise sit idle. Together they make holding more on the platform look doubly rewarded.

The combination pays off only on a balance you were keeping anyway

If you were going to keep a balance anyway, the combination is genuinely efficient: the balance earns a yield and simultaneously lifts your cashback band. Nothing is wasted.

The trap is running the logic backwards — moving money onto the platform to reach a higher band, then justifying it with the yield. That turns a spending decision into a custody and allocation decision, and those should be judged on their own terms.

The yield is variable and comes from partner products, not a bank deposit

A variable APY, reported at up to around 3.6% in some markets, generated by partner-run products rather than by a bank deposit. Variable means it moves. Yield produced by external vaults carries the risk of those vaults, and a rate quoted today is not a rate promised next quarter.

The arithmetic worth doing

Compare the extra cashback from moving up a band against what the same money would earn elsewhere, and count the concentration risk of holding it with one company. On a modest balance the tier upgrade is often worth less than it looks; on a balance you were already keeping there, it is close to free.

Tracked values on the Krak Card page.