Licensing, Registration and Upkeep
The work most easily deferred, and the most expensive to defer.
Foreign qualification penalties are retroactive. Many states do not stop at a late fee; they assess fees, penalties, and interest for every year the business operated without authority. The gaps accumulate undetected until an audit or a transaction reveals them, and by then the cheap fix is gone.
Loss of good standing is worse than a bill. It can suspend the right to operate in the state, and it surfaces at the moment a certificate of good standing is requested: a lease renewal, a financing, a government contract, the closing of an acquisition. In some states officers can be held personally liable for particular unpaid taxes.
Beneath that sits the routine that nobody owns. Annual reports on inconsistent cycles. Registered agent appointments that go stale, so service of process can be missed and become a default judgment. Registration for income and franchise tax, for sales and use tax, for payroll, each through its own agency and in some states its own separate process.
Industry licensing is harder still. A wholesale drug distributor licenses through each state's board of pharmacy on terms that are not uniform: what one state covers with a single wholesale distributor license, another may split into separate credentials for devices or legend drugs, and some states require a separate permit for a distributor that arranges sales without ever taking physical possession of the product. Approval runs from a couple of weeks to a couple of months. Renewals fall on one- to three-year cycles with facility inspections attached, and a change in officers or ownership triggers its own notification requirement. Behavioral health, telecommunications, staffing, and durable medical equipment each carry their own version of the same problem.
None of it is income tax, and all of it lands on the same desk as the income tax work.