IPA: /ˈbʌdʒɪtər/
KK: /ˈbʌdʒɪtər/
A person who plans how to spend money by creating a financial plan.
As a budgeter, she carefully tracks her expenses to save for her vacation.
Budgeter → The word is formed from "budget" (from Old French *bougette*, meaning a small bag or purse) and "-er" (meaning a person who). A budgeter is a person who manages or organizes a budget.
Think of a person who manages money in a 'small bag' ('budget') — that's what a budgeter does.
No commonly confused words.