Finance & accounting

Budget prompt

A copy-and-paste prompt for ChatGPT, Claude or Gemini that gets a professional budget on the first try, plus the cheapest model that does it well.

What most people type

make me a monthly budget, I take home $4,600, rent is $1,650, car payment $410, I want to save for a house

It works, but the AI has to guess your other fixed bills, variable spending and target home price or down payment, so the first answer usually needs another round. The version below asks for exactly what a professional would deliver.

The better prompt

Create a monthly budget for me based on these facts:

- Monthly take-home pay: $4,600
- Rent: $1,650
- Car payment: $410
- Main goal: save for a house

Missing details you should plan around (use my answers if I give them, otherwise use the placeholder as a flexible line item and say so):
- Other fixed bills: [utilities, insurance, phone, subscriptions, debt payments]
- Variable spending: [groceries, gas, dining out, personal]
- House goal: [target home price or down payment], [target date], [current savings]
- Location/cost of living: [city or region]

Format:
1. A table of categories with a dollar amount and % of take-home for each, grouped as Needs, Wants, and Savings/House Fund. Calculate all totals and percentages and show the math, making sure the total equals $4,600.
2. A short note on how much goes to the house fund each month and roughly how long it would take to reach [down payment target]. Show the calculation and don't invent figures such as interest rates or home prices.
3. Three or four practical tips to increase the house fund, based on this budget.

Keep amounts for categories I didn't specify as clearly labeled estimates I can adjust.

Replace the [brackets] with your details before you send it: utilities, insurance, phone, subscriptions, debt payments, groceries, gas, dining out, personal, target home price or down payment, target date, current savings, city or region, down payment target.

Why this version works

  • Organized facts into a clear list. Makes the given numbers easy to apply exactly
  • Added placeholders for missing bills and house goal. A realistic budget and savings timeline need these
  • Requested table with percentages and shown math. Ensures totals add to $4,600 without errors
  • Added house-fund timeline, no invented figures. Ties budget to their goal without made-up rates or prices

What a professional budget prompt covers

  • Budget table by category
  • Savings target placeholder or suggestion
  • Placeholders for other expenses

Best AI model for this prompt

This is a everyday task: simple arithmetic and budgeting; needs accurate totals but is a standard task. You don't need the most expensive model. The cheapest model at each company that handles it well:

CompanyModelPer usePer 1,000 uses
AnthropicClaude Sonnet 5.5$0.0060$6.03
OpenAIGPT-6.1 Terra$0.0030$3.02
GoogleGemini 3.8 Flashcheapest$0.0023$2.26

Pay-per-use list prices for this prompt and its expected answer (about 550 tokens). On a monthly chat plan, the same choice shows up as more messages before you hit your limit. See today's AI prices.

Budget prompt for ChatGPT, Claude and Gemini (Finance & accounting) · PromptSaver