Monthly Budget Calculator
A solid monthly budget is the foundation of financial freedom. Stop wondering where your money went, and start giving every dollar a specific job before the month even begins.
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The 50/30/20 Target Calculator
Enter your net (after-tax) monthly income to see your ideal spending targets.
Why I Built This: The Paycheck-to-Paycheck Cycle
When I started my first job, I tried managing my expenses in a complex desktop spreadsheet. The problem was that when I was standing in the grocery store, I couldn't easily check my remaining balance. Because my budget wasn't accessible in my pocket, I ended up guessing—and frequently overspending.
I built this Simple Sheet template to bring zero-based budgeting directly to my phone. By allowing you to subtract expenses dynamically as they happen, the math becomes completely transparent. You always know exactly how much cash you have left for the month without logging into a heavy banking app.
Zero-Based Budget Example: A $5,000 Income
Zero-Based Budgeting (ZBB) is the practice of tracking the math until your income minus your expenses equals exactly zero. Leaving money "unassigned" is how people accidentally overspend. Here is how you might assign a $5,000 net income:
By forcing the bottom line to zero, every dollar has a specific job. If you overspend in the Wants category, you must consciously subtract that amount from your Savings or Groceries row to maintain the balance.
Understanding the 50/30/20 Rule
The 50/30/20 rule is one of the most effective and simplest budgeting frameworks recommended by institutions like the Consumer Financial Protection Bureau (CFPB). It divides your after-tax income into three distinct buckets:
- 50% Needs: The absolute essentials. This includes rent or mortgage payments, groceries, basic utilities (water, electricity), minimum debt payments, and essential transportation to get to work.
- 30% Wants: The fun stuff. Dining out, movie tickets, hobbies, streaming subscriptions, vacations, and shopping for non-essential clothing.
- 20% Savings & Investing: Your future self. This includes building an emergency fund, contributing to retirement accounts, and making extra payments on high-interest debt. Check our Compound Interest guide to see how this 20% can grow over time.
Why Use Simple Sheet Instead of Excel?
While standard spreadsheet software is incredibly powerful for yearly forecasting, it is often too clunky for daily, on-the-go expense tracking. Simple Sheet bridges the gap perfectly.
| Feature | Excel / Sheets | Notes App | Simple Sheet |
|---|---|---|---|
| Live Math Calculations | ✅ | ❌ | ✅ |
| Mobile-Friendly Entry | △ (Clunky) | ✅ | ✅ |
| Easily Shareable URL | △ (Needs login) | ❌ | ✅ |
How to Practice Zero-Based Budgeting
By opening our template in the Simple Sheet app, you can seamlessly practice Zero-Based Budgeting directly from your phone:
- Open the App: Click the "Open Full Template in App" button above to load the budget template.
- Enter Net Income: Enter your Total Monthly Net Income in the "Base" field at the top.
- Deduct Fixed Needs: Use the pre-filled rows to subtract your fixed expenses like Rent, Utilities, and Car Payments using the minus operator.
- Allocate Wants & Savings: Subtract your flexible expenses (Groceries, Dining Out) and planned Savings.
- Reach Exactly Zero: If you have money left over at the bottom, allocate the remaining amount to a Savings or Debt row so your final balance reaches exactly zero.