As of 13 August 2026, AI can create a shared household budget.

What to actually do

1. Use a tool built for this

   The route this page recommends

2. Do it yourself

   Second choice

   A chat interface, chat-fluent skill, and roughly 30 minutes until you can act on the result.

   How to actually do it

   1. Open a blank spreadsheet and create columns for category, item, amount, frequency, monthly amount, who pays and notes.
   2. Gather both partners' take-home income, current bills, debt payments, regular spending and savings goals from payslips, bank statements and bills, without copying account numbers or passwords.
   3. List every irregular cost, its amount, due month and frequency, then paste the information into the prompt under the matching headings.
   4. Paste the completed prompt into a chatbot and ask it to produce the monthly table, calculations, missing-information list and questions for you both.
   5. Copy the returned table into the spreadsheet and compare each income and cost against the original payslips, statements, bills and debt records.
   6. Sit with your partner to settle the flagged questions, the contribution method, personal spending boundaries and savings priorities, then update the agreed figures and recalculate the remaining buffer.
   7. Use the finished spreadsheet as the shared version, record who will update it and set a date to compare it with actual spending.

   Prompt

   Create a shared household budget for me and my partner using the information below. Use pounds sterling and show monthly figures. Convert annual figures to monthly figures only when the source period is clearly stated. Do not invent, guess or fill gaps in any figure. Separate fixed costs, variable essentials, discretionary spending, debt payments, savings and irregular annual costs. Include a monthly sinking fund for irregular costs by dividing each clearly stated annual cost across the relevant months. Show total household income, total committed spending, planned flexible spending, savings, remaining buffer and each partner's agreed contribution. If the contribution method is not specified, show two neutral options and label them as options rather than recommendations. Flag missing or contradictory information before producing the final budget. Do not give financial advice or recommend investments, loans or tax actions. Keep the plan realistic and explain which decisions require agreement between both partners. Return: 1) a clear monthly table, 2) the calculations in plain English, 3) a list of missing information, 4) questions for us to settle together, and 5) a simple weekly spending limit only if the figures support one.
   
   Household income:
   [Partner 1 monthly take-home pay and source period]
   [Partner 2 monthly take-home pay and source period]
   [Other regular household income and source period]
   
   Fixed monthly costs:
   [Rent or mortgage]
   [Council Tax]
   [Energy]
   [Water]
   [Broadband and phones]
   [Insurance]
   [Childcare or care costs]
   [Subscriptions]
   [Other fixed costs]
   
   Variable essentials:
   [Groceries]
   [Transport]
   [Medication or health costs]
   [Household supplies]
   [Other essentials]
   
   Debts and repayments:
   [Debt name, required payment and frequency]
   
   Savings and goals:
   [Emergency savings contribution]
   [Other agreed savings goals]
   
   Irregular costs:
   [Cost, amount, due month and whether it is annual or another period]
   
   Agreements and preferences:
   [How costs are currently shared]
   [Spending each partner keeps personal]
   [Minimum buffer you both want to keep, if any]
   [Known changes to income or costs]
   
   Do not include bank account numbers, card numbers, passwords or other sensitive account details.

   Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.

3. Hand it to a person

   The distant third

   A person who owns the outcome does this end to end, worth it when the failure is dear.