My wife kept track of her mileage for work but not the total number of miles on the vehicle for 2018. Does the total have to be accurate if I know the total for work?

[kfrazee29]

She drove 4,756 miles for work but she did not keep track of the number of miles total for personal trips

[Ashby · Accepted solution]

If these miles are for her job that works for an employer, that is no longer deductible because of tax reform. The act passed last year suspended the deduction for unreimbursed employee expenses.

If they are for self-employment, they can be deducted and you should use your best estimate for personal mileage.