When registering a
newly purchased aircraft or an aircraft brought into the state,
you have 30 days to complete the registration process, starting
with the date of purchase or the date an aircraft is brought into
Iowa. If you fail to register your aircraft within that time
period, a monthly penalty of 5 percent of the registration fees
will begin to accumulate. The penalty begins on the first day of
the month following the 30-day registration period explained
above.