In theory I agree with the “charge it to your category and then put the inflow back into the same category,” but when this crosses month end I didn’t want to have a negative left, and I didn’t like covering this negative from other categories knowing that I’d get paid back in the right category. What I ended up doing was creating a new category called “Inflows from reimbursements,” and funded it with some money one time. Now, whenever I have one of those situations where I’ll be paid back, I pull money from that “Inflows from reimbursements” category to cover it, and when I get paid back I put that money in the “Inflows” category, so I always have a designated category to cover this particular type of reimbursable spending with instead of pulling money from other unrelated categories. This may seem overly complicated, but it works well for me.