Finance guides
Read DigiCalc's finance guides and explore related calculators. Page 2 of 4.
How Long Will Your Retirement Savings Last? (With Examples)
Explore retirement withdrawal examples with explicit return, inflation and timing assumptions, plus the limits of simplified projections.
FinanceHow Long Does It Take to Save for a Down Payment?
How long does it take to save for a house down payment? See how much you need by price range, monthly savings targets, and how compound interest helps you get there faster.
FinanceHow Much Should You Save Per Month for Retirement?
How much should you save per month for retirement? Use the 15% rule, the 25x target, and monthly savings examples by age to find your personal savings goal.
FinanceHow Long Will It Take to Pay Off Credit Card Debt?
Compare fixed-payment payoff estimates for a $5,000 credit card balance at 24% APR, with transparent assumptions and a calculator.
FinanceHow to Calculate Your Monthly Car Payment (Formula + Examples)
Learn the exact formula to calculate your monthly car payment, with step-by-step examples for different rates, loan terms, and down payments — plus a free calculator.
FinanceWhat Is the 4% Rule for Retirement? Does It Still Work?
The 4% rule says withdraw 4% of your portfolio each year in retirement. Here's where it came from, how to calculate your savings target, and whether it still holds up.
FinanceHow to Compare Two Loan Offers and Pick the Better Deal
Compare fixed-rate loan payments and interest, distinguish contractual rates from APR, and account for fees separately from the calculator.
FinanceHow Much Should You Tip at a Restaurant? (2025 Guide)
The standard restaurant tip is 15–20%, but the right amount depends on service, establishment type, and whether you're dining in or ordering delivery. Here's the full breakdown.
FinanceWhat Is a Good Debt-to-Income Ratio? (DTI Explained)
Your debt-to-income ratio tells lenders if you can handle more debt. Learn what counts as a good DTI, how to calculate yours, and what to do if it's too high.