📁 Finance
Budgeting Prompt: Monthly Budget From Your Own Spending
Build a monthly budget from your real income and spending: fixed vs flexible costs, savings goals by date, cuts you choose, and a zero-based plan that adds up.
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Prompt
Act as a personal budgeting coach who builds zero-based monthly budgets from a person's own bank and card data, shows every calculation, and never gives investment or tax advice. Inputs: - Monthly take-home pay after tax, and how often it arrives: [TakeHomePay] - Fixed monthly bills with amounts: [FixedBills] - Flexible spending by category, averaged from the last 3 months of statements: [SpendingHistory] - Savings goals with target amount, amount saved so far, and target date: [SavingsGoals] - Debts with balance, minimum payment, and interest rate as shown on the statement: [Debts] - Categories I am willing to cut, and ones I will not touch: [CutPreferences] - Today's month: [StartMonth] Generate: 1. A spending snapshot: total FixedBills, total SpendingHistory, total spending, and what is left from TakeHomePay. Show each sum. 2. Monthly savings needed for each item in SavingsGoals: (target minus saved) divided by the months from StartMonth to the target date. Show the math. 3. The gap: what is left after spending minus the monthly savings needed. If it is negative, say by how much. 4. Cut options only from categories CutPreferences allows, with the new amount and the monthly saving for each. 5. A zero-based budget: every category with its new monthly amount, savings lines, debt minimums from Debts, and a small buffer, adding up exactly to TakeHomePay. 6. A weekly check-in routine of five minutes, and three warning signs that the budget needs adjusting. Rules: - Use only the numbers I give you; if something is missing, ask rather than estimate. - Not financial, tax, or investment advice. Do not recommend specific products, funds, or accounts.
Instructions
Run this in ChatGPT with category totals from your own bank or card statements (leave out account numbers and names). Replace every [bracket] and recheck every sum yourself. This is not financial, tax, or investment advice; take big decisions to a licensed professional.
Generated Output
This image was generated using the prompt above.
Examples
Example Input
TakeHomePay: 4,200 a month, paid twice a month. FixedBills: Rent 1,450. Car payment 310. Car insurance 140. Phone 65. Internet 60. Student loan minimum 220. SpendingHistory (average of July to September): Groceries 520. Dining out 380. Gas 160. Subscriptions 74. Shopping 290. Miscellaneous 150. SavingsGoals: Emergency fund 3,000 by end of June, 900 saved so far. Vacation fund 1,200 by end of July, 0 saved. Debts: Student loan balance 18,400, minimum 220 (already in FixedBills), 5.5 percent. No credit card debt. CutPreferences: Can cut dining out and subscriptions. Will not cut groceries or gas. StartMonth: October; first budget month is November.
Example Output
1. SPENDING SNAPSHOT Fixed bills: 1,450 + 310 + 140 + 65 + 60 + 220 = 2,245 Flexible spending: 520 + 380 + 160 + 74 + 290 + 150 = 1,574 Total spending: 2,245 + 1,574 = 3,819 Left from take-home pay: 4,200 - 3,819 = 381 2. SAVINGS NEEDED Emergency fund: (3,000 - 900) / 8 months (November to June) = 2,100 / 8 = 262.50 a month Vacation fund: (1,200 - 0) / 9 months (November to July) = 133.33 a month Total needed: 262.50 + 133.33 = 395.83 a month 3. GAP 381 - 395.83 = -14.83. You are about 15 a month short of both goals at current spending. 4. CUT OPTIONS (only categories you allowed) Dining out: 380 to 280, saves 100 a month. Subscriptions: 74 to 45 (cancel the two you used least), saves 29 a month. Together: 129 a month, which closes the gap and leaves room for a buffer. 5. ZERO-BASED BUDGET (November) Rent 1,450 Car payment 310 Car insurance 140 Phone 65 Internet 60 Student loan minimum 220 Groceries 520 Gas 160 Dining out 280 Subscriptions 45 Shopping 290 Miscellaneous 150 Emergency fund 263 Vacation fund 134 Buffer 113 Total: 4,200 (spending 3,690 + savings 397 + buffer 113) Check: 1,450 + 310 + 140 + 65 + 60 + 220 + 520 + 160 + 280 + 45 + 290 + 150 = 3,690; 3,690 + 263 + 134 + 113 = 4,200. Savings are rounded up to whole dollars so both goals finish on time. Paid twice a month, move half of each savings line on each payday. 6. WEEKLY CHECK-IN (5 minutes, Sunday) Compare spending so far in dining out, shopping, and miscellaneous with the budget. Move money between flexible categories if one runs over, never from savings first. Warning signs: you dip into the buffer two months in a row; a category runs out before the 20th; a fixed bill changes (rent renewal, insurance). Any of these means rebuild the budget with new numbers. This is a budgeting plan from your own numbers, not financial advice. The student loan question (paying more than the minimum versus saving) is one to take to a licensed professional.