50/30/20 Calculator
Build a monthly budget instantly with the classic 50/30/20 rule.
Mortgage Calculator
Full PITI with amortization. Know the real cost of owning.
Emergency Fund Guide
How much, where to keep it, when to use it. The foundation of every budget.
Are You House Poor?
Signs your housing cost is crushing your financial future — and how to fix it.
The 50/30/20 Rule Explained
Popularized by Senator Elizabeth Warren's book All Your Worth, the 50/30/20 rule divides after-tax income three ways:
- 50% Needs — rent/mortgage, utilities, groceries, transportation, insurance, minimum debt payments
- 30% Wants — dining, entertainment, subscriptions, vacations, hobbies
- 20% Savings & Debt — emergency fund, retirement, extra debt payments, investments
Why it works: it is simple enough to follow without an app and flexible enough that you don't need to track every coffee.
Zero-Based Budgeting
Every dollar has a job. Income minus all expense categories equals zero. Popularized by Dave Ramsey and YNAB, this method forces you to plan every dollar before the month begins. Pro: radical awareness of where money goes. Con: more time-intensive.
The Envelope Method
Old-school and surprisingly effective for overspenders: put cash (or use digital envelope apps) for each discretionary category. When the envelope is empty, no more spending. Works because the visual of empty envelopes is more painful than a declining credit card balance.
Pay Yourself First
The laziest — and arguably best — method. Automate a fixed percentage (20% is a good start) of every paycheck into savings/investments before you see it. Spend the rest however you want. No tracking needed. Works because you adapt your lifestyle to what's left, not the other way around.
Best Budgeting Apps in 2026
- YNAB (You Need A Budget) — gold standard for zero-based budgeting, $109/yr
- Monarch Money — a favorite replacement for the now-shuttered Mint, $100/yr
- Copilot — beautiful iOS app with auto-categorization, $95/yr
- PocketGuard — simple "can I spend this?" tool, free + premium tier
- Good old Google Sheets — free, endlessly customizable, works forever
How Much Should Rent Be?
Three rules, from strictest to most lenient:
- 25% of net (take-home) — the safe path. Comfortably affordable.
- 30% of gross — the traditional lender guideline.
- 40% of gross — the "high-cost-of-living" exception. Anything more is house-poor territory.
If you live in San Francisco, NYC, Boston, or LA, 40% is sometimes unavoidable. Everywhere else, stick to 25-30% and invest the difference.
The 3 Account Setup That Saves Budgets
- Checking account — direct deposit lands here, monthly bills come out
- High-yield savings — emergency fund (6 months expenses), auto-transfer 20% every payday
- Brokerage / retirement — 401(k) via payroll, Roth IRA via monthly auto-transfer
Never touch the HYSA except for actual emergencies. Never touch brokerage until retirement. Your checking account's job is to run dry every month — that's how you know you're not leaving money unallocated.
Budget Templates
Single, $50,000 salary
Net ~$3,250/month. Needs $1,625 (rent $1,000, groceries $300, utilities $125, car $200). Wants $975. Savings $650.
Couple, combined $150,000
Net ~$9,500/month. Needs $4,750 (mortgage $2,500, groceries $700, utilities $300, car $750, insurance $500). Wants $2,850. Savings $1,900.