Was it 100% business use in 2022?  If not, that is likely the cause.

If it was 100% business use, then as Rick says, it may be the bizarre rules of the Luxury Limits.

This example uses the 'tables' for depreciation, but ProSeries uses the 'math' way of doing it, so these numbers may not necessarily match your number.

If it wasn't for the Luxury Limits for the $41,000 vehicle, this would be the depreciation schedule:

1. $24,600 ($20,500 SDA plus $4100 regular)
2. $6560
3. $3936
4. $2362
5. $2362
6. $1180

The Luxury Limits not only limit the amount, but it says the 'excess' amounts can't be used until AFTER the Recovery Period (year 7).

So in year 1, the $20,600 is limited to $11,560, so the 'excess' $9040 can't be used until year 7.

In year 2, the $6560 is limited to $5700, so the 'excess' $860 can't be used until year 7.

That happens every year.

So with all of the excess amounts being pushed to year 7, sometimes you run out of 'usable' amounts before the 5/6 year Recovery Period ends.  But then it starts back up in year 7.