Budget Calculator
Plan your monthly income and expenses to achieve financial freedom
Enter your effective federal + state tax rate to convert gross to after-tax income. Leave blank if entering after-tax amounts.
Enter Your Income to Get Started
Fill in your monthly salary and expenses above to instantly see your budget surplus or deficit, savings rate, category breakdowns, and 50/30/20 rule analysis.
How to Use This Budget Calculator
Enter Your Monthly Income
Start by entering your salary/wages and any other household income sources. If you entered your gross (pre-tax) pay, optionally enter your combined federal and state effective tax rate to convert to after-tax income. Leave the tax rate blank if you are entering your take-home pay directly.
Fill In Your Expenses by Category
Click each section (Housing, Transportation, Food, etc.) to expand it and enter your monthly amounts. Use monthly averages for irregular costs — for example, divide a $1,200 annual car registration by 12 to get $100/month. Enter only amounts you actually spend; leave unused fields blank.
Review Your Surplus/Deficit and Category Benchmarks
The results panel updates instantly. Check your net income (surplus or deficit), your savings rate, and the category bars. Each bar shows your percentage of income alongside the recommended benchmark. Look for bars marked 'Over budget' in red — these are the categories most likely to cause financial strain.
Analyze the 50/30/20 Rule and Export Your Plan
Scroll to the 50/30/20 Rule section to see how your spending aligns with this popular budgeting framework. Toggle between Monthly and Annual view for different planning perspectives. Click 'Export CSV' to download your complete budget breakdown for record-keeping or further analysis in a spreadsheet.
Frequently Asked Questions
What is a good savings rate according to financial experts?
Most financial planners recommend saving at least 15–20% of your gross income for retirement, in addition to building an emergency fund of 3–6 months of expenses. The classic 50/30/20 rule suggests dedicating 20% of after-tax income to all savings and investments combined. However, the right savings rate depends on your age, retirement goals, and existing savings. If you are starting late or have aggressive goals, you may need to save 25–30% or more. The key insight is that even small increases in your savings rate — say from 5% to 10% — can dramatically shorten the time to financial independence due to the compounding effect over decades.
How much should I spend on housing?
The most widely used housing benchmark is the 30% rule: total housing costs (rent or mortgage, insurance, taxes, utilities, HOA fees) should not exceed 30% of your gross or after-tax income. Financial planners often tighten this to 25–28% of gross income for maximum financial flexibility. In high-cost cities like San Francisco or New York, many households spend 35–50% of income on housing, which is why those markets are particularly challenging for building wealth. If your housing percentage is high, the priority should be finding ways to reduce it over time — through refinancing, downsizing, or increasing income — rather than accepting it as unchangeable.
What is the 50/30/20 budgeting rule?
The 50/30/20 rule is a simple budgeting framework that divides your after-tax income into three buckets: 50% for needs (housing, transportation, groceries, healthcare, utilities, and minimum debt payments), 30% for wants (dining out, entertainment, subscriptions, hobbies, travel, and non-essential shopping), and 20% for savings and debt repayment beyond minimums. It was popularized by Senator Elizabeth Warren in her book 'All Your Worth.' The rule works best as a starting point — it is deliberately simple, which makes it easy to follow. However, it may need adjustment for very high or very low incomes, or for households in high cost-of-living areas where needs naturally consume more than 50% of income.
Should I use gross income or after-tax income for my budget?
Always budget against after-tax income — the money that actually hits your bank account. Using gross income inflates your apparent spending power and makes budgets look more comfortable than they are. If you receive a W-2 salary, your after-tax income is simply your net pay (what you see on your paycheck after federal, state, and FICA deductions). If you entered your gross salary in this calculator, use the tax rate field to convert it. For self-employed individuals, after-tax income is gross revenue minus business expenses and self-employment taxes. Benefits like employer 401(k) contributions or HSA funding should generally be counted separately, as they are income that never touches your bank account.
What is a bills account and why should I have one?
A bills account (sometimes called a float account) is a separate checking or savings account used exclusively to pay fixed monthly obligations: rent, insurance, car payment, utilities, phone, subscriptions, and similar recurring bills. Each month, you transfer a fixed amount — equal to your total fixed monthly expenses — into this account, and bills are paid from it automatically. The benefit is predictability: your main checking account shows only discretionary money that is actually available to spend, eliminating the common mistake of spending money you have already mentally committed to a bill. Our calculator shows the recommended transfer amount as your total fixed expense subtotal.
How do I budget for irregular or annual expenses?
The best approach for irregular expenses is the sinking fund method: divide each annual or irregular cost by 12 and include that monthly amount in your budget. For example, if car registration costs $240/year, include $20/month in your transportation budget. For home maintenance, a common rule of thumb is 1–2% of your home's value annually ($2,000–$4,000 for a $200,000 home), which translates to $167–$333 per month. Similarly, holiday gifts averaging $600/year become $50/month. This prevents large irregular expenses from appearing as surprises and ensures you have the money set aside when the bill arrives. Over time, your sinking fund amounts will become more accurate as you track your actual spending patterns.