OpenBudget: bank data for AI and spreadsheets, $3.1K in 30 days

OpenBudget connects financial data from banks, brokerage accounts, and retirement accounts to AI assistants and spreadsheets. Its $3.1K in the last 30 days is verified through the payment provider's API by TrustMRR (Stripe), as of September 30, 2026.

What it actually sells

OpenBudget is a connector for using bank and investment data with AI assistants and spreadsheets. Its site says, “Connect your bank accounts to AI and get real answers about your money.” It connects transactions, balances, spending, and debts to supported AI clients.

The product synchronizes categorized transactions with Google Sheets and Excel. It supports category rules, split charges, transaction notes, brokerage accounts, and retirement accounts. Recurring AI checks can cover summaries, bills, and transaction cleanup.

How it charges

OpenBudget costs $5 a month billed annually, or $9.95 month to month, and starts with a 7-day free trial. The pricing page presents one subscription, an annual billing option, a month-to-month option, and a free-trial entry point.

Month by month

Monthly revenue as read from the payment provider by TrustMRR, in US dollars, as of September 30, 2026.

Month	Revenue (USD)
2026-03	$30
2026-04	$319
2026-05	$619
2026-06	$1,380
2026-07	$2,066
2026-08	$2,255
2026-09	$3,141

Where customers come from

The founder lists SEO as a growth channel. The site publishes a blog with financial integration guides and product comparisons. It also offers an MCP connector for AI clients and shows integrations with Google Sheets and Excel.

What stands out

The site says Plaid connects 10,000+ institutions, while the product page also states support for 10,000+ US banks. OpenBudget provides 100+ spending categories and claims an account connection takes 2 minutes. The project describes itself as independent and self-funded.

From the official site

Connect your bank accounts to AI and get real answers about your money.

Connect your banks once through Plaid, and your transactions, balances, and debts flow into the AI you already use

Excerpts from the official website, fetched October 1, 2026.

Where it sits in the data

OpenBudget's $3.1K in the last 30 days is higher than 86% of the 5,602 projects with payment-verified revenue in our dataset; the median across them is $150. Within the “Fintech” category (248 projects) it is higher than 92% (category median $80). Snapshot: 2026-09-02 to 2026-09-30. The dataset only covers founders who chose to publish their numbers, so it leans toward businesses that work; use it for scale, not as an average.

Currency

All figures are in US dollars as published. A rough yuan or euro conversion is not applied here because prices, taxes and acquisition costs differ by country.

Could you build something like this?

My view is that the demand sits with individuals who want their AI assistants and spreadsheets to work with their financial records. Distribution would need to reach those users through search, integration directories, AI-client ecosystems, and educational content about connecting accounts.

The difficult work is financial-data integration, account security, connection reliability, and ongoing support. Each supported institution and financial account type adds operational complexity. A new entrant would also face established competitors in personal finance software and financial-data connections.

Verdict: Hard to replicate.

One thing to take from it

My view: OpenBudget combines a narrow data connection with familiar work surfaces. It puts financial information into AI assistants, Google Sheets, and Excel, then adds transaction organization and recurring checks around the same connection.

Sources

OpenBudget official website, fetched October 1, 2026
OpenBudget pricing page, fetched October 1, 2026
OpenBudget about page, fetched October 1, 2026
TrustMRR: revenue verified through the payment provider's API by TrustMRR (Stripe), as of September 30, 2026

Revenue, team and start-cost figures are what the founder reported at the interview date, not current figures and not a prediction of what you will earn. Product and pricing facts come from the business's own website as checked on 30 September 2026. Method & sources · Disclosure