metamask card vs vault — which one holds better under load?

Back in 2019 we didn't have this many options, you just used what worked and prayed. Now there's a new card every week and half of them are gone in six months.

I'm looking at MetaMask card versus Vault for running some ad spend — not huge volume, maybe three to five thousand a month but spread across twenty or thirty transactions. Want something that won't decline when I need it to work.

The old guard here will know what I mean — it's not about the fees, it's about the card actually accepting the charge when you put it in front of a merchant.

When did you last test either one? This reads like a 2019 post about 2026 products.

That's why I'm asking. Used MetaMask card last month and it was fine, but that's one month of data. Vault I haven't touched yet.

Ran both at that volume in Q3 this year.

	MetaMask	Vault
Transactions	127	112
Declines	4	8
Decline rate	3.1%	7.1%
Failed top-ups	0	2

The decline rate difference is real. MetaMask's BIN seems to have better acceptance with ad networks.

Lower decline rate on a MetaMask product comes with a tradeoff: they are a known entity with a compliance department that exists.

Vault is smaller and less integrated. The failures are higher, but the privacy is better.

Fair point. For ad spend I care more about the charge going through than about hiding it from MetaMask. I'll go with the lower decline rate then.