How to build a Google Sheets & Excel monthly guide

Use a monthly balance sheet template in Google Sheets and Excel, then let an AI computer agent keep assets, liabilities, and equity updated while your team focuses on strategy.
Advanced computer use agent
Production-grade reliability
Transparent Execution

Why Google Sheets & Excel AI

Every month, someone in your team loses a full afternoon hunting through bank portals, exports, and invoices just to answer a simple question: are we healthier than last month?A monthly balance sheet template solves the structure problem. It standardizes how you track assets, liabilities, and equity, so every month becomes comparable. In Google Sheets and Excel you can duplicate last month’s tab, adjust line items, and instantly see debt ratios, working capital, and runway. Templates also reduce formula errors, give you a clean audit trail, and make it far easier to share lender-ready snapshots with investors or your accountant.But the real unlock is when that template is maintained by an AI computer agent. Instead of re-keying numbers, the agent signs into your banking dashboards, downloads statements, pastes updated balances into the right cells, and checks that totals reconcile. While you’re planning campaigns or closing deals, the agent quietly builds a fresh snapshot of your financial position and flags anything that looks off, turning a painful month-end ritual into an automated pulse check on your business.

How to build a Google Sheets & Excel monthly guide

### 1. Manual methods in Google Sheets and ExcelIf you’re just starting, the classic approach still works. Here’s a concrete, repeatable way to do it by hand.**Step 1: Start from a template**- In **Google Sheets**, go to `sheets.new` or Drive → New → Google Sheets. You can build your own layout or adapt a free template.- For official basics, see Google’s help on Sheets: https://support.google.com/docs- In **Excel**, open Excel → File → New and search for balance sheet templates. Microsoft’s guidance lives at: https://support.microsoft.com/excelCreate three main sections in rows:- Assets (current and non-current)- Liabilities (current and long-term)- Equity**Step 2: Define your chart of accounts**List the actual accounts you use:- Bank accounts, merchant accounts, petty cash- Inventory, prepaid expenses, fixed assets- Credit cards, lines of credit, loans, taxes payableGive each account its own row. Be explicit; vague labels like ‘Other’ make analysis painful later.**Step 3: Add formulas**In both Sheets and Excel:- Use `=SUM(range)` to total current assets, total liabilities, and equity sections.- Add a check cell: `Total Assets - (Total Liabilities + Equity)` and conditionally format it red if not zero.- For Google Sheets conditional formatting docs: https://support.google.com/docs/answer/78413**Step 4: Make it monthly**- Create a tab for each month: `Jan 2026`, `Feb 2026`, etc.- At the start of a new month, **duplicate last month’s tab**, clear only the numeric cells, and keep all formulas.**Step 5: Reconcile and update**Each month:- Log into your bank and download statements.- Manually type closing balances into the right rows.- Tie out credit card and loan balances.- Confirm your check cell is zero.*Pros (manual)*: Maximum control, zero tooling cost, good for understanding your numbers.*Cons*: Time-consuming, easy to mis-type; as accounts grow, this becomes a drag on founders and operators.---### 2. No‑code methods with automation toolsOnce the template is solid, you can stop copying numbers by hand and let no-code automation move data for you.**Approach A: Connect apps to Google Sheets**Many banks, accounting tools, and CRMs sync into Sheets via add-ons or middleware.1. **Use Google Sheets add-ons** - In Sheets, go to Extensions → Add-ons → Get add-ons. - Search for connectors for your accounting or banking platform. - Official guide to add-ons: https://support.google.com/docs/answer/2942256 - Map incoming data (like bank balances) to a raw ‘Data’ tab.2. **Build a mapping layer** - On a second tab, use formulas like `=VLOOKUP` or `=INDEX(MATCH())` to pull balances from the Data tab into your monthly balance sheet lines. - Google’s lookup docs: https://support.google.com/docs/answer/30933183. **Repeat for Excel with connectors** - In Excel, use Power Query to connect to CSV exports or database sources. - Microsoft’s Power Query overview: https://support.microsoft.com/en-us/office/power-query-overview-7104fbee-9e62-4cb9-a02e-5bfb1a6c536a - Load transformed results into a ‘Data’ sheet that your balance sheet formulas reference.**Approach B: Automate file ingestion**Using no-code platforms (Zapier, Make, n8n, etc.), you can:- Watch an email inbox for ‘Your monthly statement is ready’.- Auto-save attachments into Google Drive.- Append parsed numbers (e.g., account balances) into the Data tab of your Google Sheet via the Google Sheets API or native integrations.- Google’s Sheets API basics: https://developers.google.com/sheets/api/guides/concepts*Pros (no-code)*: Big time savings, repeatable flows, less manual copy-paste, good for non-technical teams.*Cons*: Integrations can break when vendors change formats; edge cases (one-off adjustments, new accounts) still need human work.---### 3. Scaling with AI computer agents (Simular)At some point, your balance sheet isn’t just monthly; it’s by entity, by brand, by region. That’s where a general-purpose AI computer agent like Simular Pro becomes your financial operations teammate.**Method 1: Let the agent operate your desktop workflow**Imagine the end of the month:- You describe the workflow once: which bank sites to open, how to log in, which statements to download, which Google Sheets monthly template to update, and which Excel workbook to refresh.- In **Simular Pro**, the agent then literally uses your computer: it opens the browser, navigates to banking portals, downloads CSVs, opens Google Sheets in the browser, and pastes balances into the right rows.- Because Simular is built for production-grade reliability and long-running workflows, it can run through hundreds or thousands of steps, including 2FA logins and file uploads, without you watching every move.*Pros*: No reliance on fragile APIs; the agent acts like a trained finance assistant following your playbook. Works across browser, desktop Excel, CRMs, and email at once.*Cons*: Requires initial setup and careful testing; you’ll want clear access rules and a dedicated machine or user session.**Method 2: Autonomous month-end close pipeline**For more mature teams:- Trigger a Simular Pro agent via a webhook at a fixed time (say, the 2nd business day of the month).- The agent: - Pulls raw exports from email and Drive. - Normalizes file names and saves them into structured folders. - Updates Google Sheets balance sheet templates for each entity. - Opens Excel models for scenario planning and refreshes linked data. - Runs reconciliation checks (e.g., total assets vs liabilities + equity) and logs any discrepancies into a ‘Review’ tab.- Because all actions are transparent and inspectable in Simular, your finance lead can replay any run and see exactly what happened.*Pros*: True set-and-forget month-end: you come in to a ready balance sheet and exception list instead of a blank spreadsheet. Highly scalable across multiple companies or clients (perfect for agencies and accounting firms).*Cons*: More advanced; you’ll want a clear process map and some time to iterate on the agent’s instructions.**Method 3: Hybrid oversight for strategic decisions**- Use Simular to maintain the mechanical parts: fetching data, updating Google Sheets and Excel templates, and running checks.- Humans then focus only on interpreting outputs: evaluating leverage, deciding on hiring, planning marketing spend.This hybrid model keeps financial control firmly in human hands while shifting the tedious navigation, clicking, and copy-paste work to an AI agent that’s designed to use computers like a disciplined operations teammate.

Automate monthly balance sheets with AI agents now

Onboard Simular for Sheets
Train your Simular AI agent by recording one ideal run: open Google Sheets and Excel, load your monthly balance sheet template, map each account, then save those steps as a reusable workflow.
Test and refine the agent
Fine-tune the Simular AI Agent by running it on a safe copy of your Google Sheets and Excel files, inspecting every click and formula update, and adjusting prompts until results are accurate.
Delegate and scale with Simular
Once validated, schedule the Simular AI Agent to update all client or entity balance sheet templates, so monthly tasks run unattended while you focus on analysis and strategy.

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