<prompt> Human: For work I travel occasionally and when I travel I get a per diem. This is used mainly for food but I never over spend so its normally extra money in my pocket. Im just wondering what you would recommend for factoring this amount into my budget since it can be very irregular. For example last month I traveled to DC for 3 weeks mon-thurs and got 600 total in per diem. This month I will only travel to Indy one week and get 140. Any suggestions?  <response>: Dont put it into your budget, and save the difference. If youre anxious about it, set yourself a per diem travel budget. But I wouldnt add that money to your income. 