Budget Calculator – Monthly Budget Planner
Plan your monthly budget. Track income, expenses, and surplus to take control of your finances.
📊 Finance📐 Surplus = Income - All Expenses
Monthly take-home income ($)
Housing (rent/mortgage)
Transportation
Food and groceries
Utilities and bills
Entertainment and dining
Savings and investments
Please enter valid values.
Formula & Reference
| Variable | Formula | Units |
|---|---|---|
| Budget Calculator – Monthly Budget Planner | Surplus = Income - All Expenses | $/month |
Step-by-Step Examples
Example 1
$5K Income
$5K income, typical expenses.
- Total expenses: $3,700 | Savings: $500
- Surplus: $1,300/month to invest
✓ $1,300 surplus
Example 2
Tight $3K Budget
$3K income, lean expenses.
- Total: $2,250 | Surplus: $750/month
✓ $750 surplus
Example 3
Deficit Example
$4K income, $4,500 spending.
- DEFICIT: $500/month — must cut!
✓ $500 deficit
Real-World Applications
Everyone
Build and track a monthly budget.
Savers
Find money to redirect to savings.
New Workers
Plan first budget after starting work.
Couples
Create a shared household budget.
Common Mistakes to Avoid
⚠️
Budgeting with gross income
Budget with take-home pay, not salary. $75K salary might net only $52K after taxes.
⚠️
No emergency buffer
Budget $100-300/month for unexpected expenses — car repairs, medical bills, etc.
Frequently Asked Questions
50/30/20 rule? ▾
50% needs, 30% wants, 20% savings. A starting framework — adjust to your situation.
What % on housing? ▾
Under 30% of gross income. Above 30% = housing-burdened. Above 50% = severely burdened.
Best budgeting method? ▾
Zero-based (YNAB): every dollar assigned. 50/30/20: simple ratios. Envelope: physical cash limits. Pick one and stick to it.