Increase tax liability for EV purchase

Looking for advise on a sensible way to increase tax liability to ensure I can take advantage of the full 7500 rebate on an EV purchase. 

gross income was 103k last year in regular earnings and 3k as an independent contractor. This year regular income should be around 108k.  Married filing jointly but wife stays home with 2 kids. 

1040 line 24 total tax was 4800 last year. I assume with the increased child tax credit this year it will be even less maybe.  

so is there a way I can increase my liability this year to take full advantage of the rebate.