The two clocks you are working against
A bank levy is a snapshot. The bank freezes the funds that were in the account on the day it received the notice and holds them for a set waiting period, commonly 21 days, before sending them to the IRS. That waiting period is the window to get a release in place. Money deposited after the levy date is not caught by it.
A wage garnishment works differently. It stays attached to your employer and keeps taking a portion of every payment until the IRS releases it or the debt is satisfied. Only a modest amount is exempt, so most people find the remainder does not cover their normal household costs.

