Minor expenses are those expenses which do not cause a significant impact on one's budget. Synonyms for minor expense include small cost, trifling expenditure, insignificant outlay, nominal expense, petty expense, and inconsequential payment. Such expenses can be anything from buying a coffee to spending money on parking fees. Other synonyms for minor expense can also include incidental expenses, incidental costs, and overhead costs. Small amounts of money spent on things like snacks, transportation, or entertainment can all be considered minor expenses. Though they may seem insignificant individually, these expenses can add up over time and should be considered in one's overall budget.