Know Your Numbers Before You Shop

Before keys. Before closing. Before the dream—there's the budget. That's where it all begins. Income. Expenses. What you can actually afford. Homeownership runs on a budget. We help you build yours.

Open Budget App

Free forever • No signup • Your data stays on your device

Diverse couple holding keys to their new home

See your home budget come to life

Preview how Budget Sidekick tracks income, housing costs, and monthly savings.

Home Buying Budget

Income::Salary+$6,500
Income::Spouse Salary+$4,800
Housing::Mortgage-$2,400
Housing::Insurance-$180
Housing::Property Tax-$450
Living::Expenses-$2,800
Monthly Savings:$5,470

Budget Overview

Income+$11,300
Housing-$3,030
Mortgage-$2,400
Insurance-$180
Property Tax-$450
Living-$2,800
Monthly Savings:$5,470

The Ledger: Nested Accounts

The left card is your ledger—every income and expense line. Use Category::Subcategory to organize (Housing::Mortgage, Income::Salary). No chart of accounts to memorize—you build as you go, nest as deep as you need. Monthly Savings is what you can put toward a down payment or emergency fund.

Budget Overview: Executive Report

The right card is the Account Summary—the same data rolled up by category. Expand the chevron to see detail (Mortgage, Insurance, Property Tax under Housing). One view answers "How much am I spending on housing?" and "What's left?"—with drill-down when you need it. Full clarity on your finances—without the complexity.

Ledger Overview

The Overview page shows all your ledgers at a glance. Each card summarizes income and expenses by category. Click a card to drill into the full Account Summary Report. Create as many ledgers as you need—one for household expenses, one for a rental property, one for a side business. Each one gets its own summary.

Cost of Living

Income+$11,300
Housing-$3,030
Living-$2,800
Total:$5,470

Rental Property

Rent+$2,100
Mortgage-$1,450
Total:$650

Paystub

Gross+$6,500
Taxes-$1,200
Benefits-$380
Total:$4,920

S-Corp

Revenue+$8,200
Operating-$3,400
Total:$4,800

Home Renovation

Budget+$15,000
Materials-$8,200
Labor-$4,500
Total:$2,300

Net Assets

Checking+$12,400
Savings+$28,000
Credit Card-$2,100
Total:$38,300

Vacation Fund

Saved+$3,000
Flights-$1,200
Hotel-$800
Total:$1,000

Side Hustle

Consulting+$1,200
Expenses-$350
Total:$850

Full Ledger View

In the app, you add entries to your ledger, organize them with nested accounts, and watch your Budget Overview update in real time.

Import & Export

Import and export to JSON—by design, for security. Your data stays in your browser's persistent storage. You own it.

Why not spreadsheets?

Spreadsheets are great at rows and columns. But they can't nest your accounts into a hierarchy, roll up subcategories automatically, or generate a summary report that drills down from Housing to Mortgage to Insurance in one click. Budget Sidekick does all of that—no formulas, no pivot tables, no setup. You enter the numbers. We build the reports spreadsheets can't.

Start with a Budget

Track your income. Track your expenses. See what's left. A budget doesn't have to be perfect—it just has to start.

Add your numbers and watch your overview update in real time. When you know your numbers, you move forward with confidence.

Couple in bright natural light, modern suburban home, warm and hopeful mood

Ready to know your numbers?

Open the Budget app. Track your income and expenses. See your monthly savings. Then house-hunt knowing exactly what you can afford.

Open Budget App

Free • No signup • Your data stays on your device

What's Next?