Q. Which calculator should I use to record seller-financed payments and calculate payoff amounts?
A. Use the Loan Payoff Calculator. It lets you enter each payment. It supports missed, skipped, and extra payments. It supports interest rate changes.
Which calculator should I use?
If you don't see an answer, please feel free to ask.
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The Most Frequently Asked Questions
Q. Which calculator lets me enter irregular repayments and see the remaining balance?
A. Use the Loan Payoff Calculator. Enter payments on their actual dates. It supports missed, skipped, and extra payments. It supports interest rate changes.
Q. My lender and I disagree on the amount I owe. Which calculator will compute the current balance?
A. Use the Loan Payoff Calculator. Enter the complete payment history. The calculator computes the balance using your actual payments and any rate changes.
Q. How do I calculate annualized rate of return (IRR) or gross return for stocks, options, bonds, or mutual funds?
A. Use the Internal Rate of Return (IRR) Calculator. Select Help in the calculator for setup instructions.
Q. How do I plan financially for retirement, college, or another large expense?
A. Use the Accurate Investment Calculator. It can include taxes, inflation, and fees. For irregular contributions, use the Ultimate Financial Calculator. For retirement income planning, use the Retirement Calculator.
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General Financial Planning
Q. How much will $60 saved each week grow to in 10 years at a 6% return?
A. It will be worth $42,717. Use the Future Value Schedule Calculator.
Q. Which calculator should I use to plan quarterly college savings over 12 years?
A. Use the Savings Calculator for a quick estimate. For a more detailed plan, use the Investment Calculator. It supports inflation and tax adjustments.
Q. I invested $10,000 and sold for $14,687 after 27 months. What were my returns?
A. Gross return: 46.9%. Annualized return: 18.5%. Use the Return on Investment (ROI) Calculator. To save the scenario or add more transactions later, use the Internal Rate of Return (IRR) Calculator.
Q. I lent $45,000. After one year, I will receive $1,067.17 for 48 months. What is my rate of return?
A. Gross return: 13.8%. Annualized return: 4.5%. Use the Internal Rate of Return Calculator.
Explanation: The rate of return is not equal to the loan’s stated interest rate. The payment was calculated on $45,000 at 6.5% for 48 months. The first payment occurs after a one-year delay. No interest is earned during that year.
Q. Will a $200,000 cash purchase rented at $6,000 per year for 10 years and sold for $220,000 achieve a 9% return?
A. No. The result is about $58,565 below a 9% target. Use the Net Present Value Calculator.
Note: This investment does not meet the target because the NPV is negative.
Q. Which is better: $150,000 now, or $20,000 for 8 years followed by $10,000 for 5 years?
A. At a 4.5% discount rate, choose the extended payout. Its present value is $170,112. Use the Ultimate Financial Calculator. If the cash flow amount does not change, you can use the Present Value of an Annuity Calculator.
Q. I will save every other month: $1,000 now, $2,200 starting in 5 years, and $3,000 starting in 10 years. What will the balance be after 5, 10, and 20 years? What if interest rates change?
A. Use the Ultimate Financial Calculator. It supports irregular deposits and interest rate changes.
Q. After I retire, how long will my savings last if I withdraw $2,500 per month and earn 8%? What will I have after 10 years?
A. Use the Annuity Schedule calculator. It shows the depletion date and balances by month and year.
Q. What is the interest on a $50,000 loan for 70 days at 11.5% (simple interest)?
A. The interest is $1,102. Use the Interest Calculator.
Q. In 20 years, what monthly amount will match the purchasing power of $6,000 today if inflation is 3% for 5 years and 4% for the next 15 years?
A. You will need $12,525 per month. Use the Inflation Calculator. Do the calculation in two steps.
Q. How do I calculate my current net worth?
A. Use the Net Worth Calculator.
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General Business Questions
Q. How many units must we sell to break even on a new product?
A. Use the Break Even Point Calculator. Enter fixed costs, unit price, and unit variable cost.
Q. Should we lease or buy office furniture? How does depreciation affect the decision?
A. Use the Lease vs Buy Calculator. It includes depreciation in the comparison.
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Loan Planning
Q. Which loan costs less: $150,000 at 8.5% with 0 points, or $150,000 at 8.0% with 3 points paid upfront? What if I move after five years?
A. Use the Accurate Amortization Schedule. Run one case with points and one case without points.
Q. How much interest will I save if I pay an extra $100 per month toward principal? Which calculator should I use?
A. Use the Extra Payment Calculator. It also compares extra payments with investing the same amount.
Q. How do I model occasional extra payments toward a loan? How much will I save?
A. Use the Ultimate Financial Calculator (UFC). See the tutorials for setup steps.
Q. I must provide a Regulation Z APR disclosure. Which calculator should I use?
A. Use the APR Calculator. It is compliant with the Truth in Lending Act.
Q. How much can I borrow if I can pay $1,250 per month at 6.5%?
A. Use the Loan Calculator. You can also use the Amortization Schedule.
Q. Can we afford a $375,000 home?
A. Use the Affordable House Calculator and the Budget Calculator.
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Comments, suggestions & questions welcomed...
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Woo says:
If I want to calculate the APR required to result in a known total finance charge for the life of a loan, which calculator should I use? I think the APR on a loan is misstated for the total finance charges disclosed on the TIL.
Karl says:
I’m sorry that I missed your question until now.
You should use the APR Calculator.