Is this a Capital One limit?
Yes. Personal venture x can spend 40k+, but when I do "check spending limit" on the business charge card, it says 10k will be approved, and 15k will not be approved. The check spending power link is on the main business account landing page under my accounts.
With the 2 payment limit for the tax processors, this will end up being a waste of time. Might just burn the tax bill on medallion status instead, don't know. This is very unfortunate. I called them to raise the limit and they weren't very helpful.