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Guides & examples
Short articles and worked examples for each calculator—with clear math and official source links when needed.
Certificate of deposit
CD Calculator
Plain-language guides, worked deposit examples, common questions, and the math behind Nestfigure’s free CD tool.
Guides
How CD interest works
APY vs interest rate in plain words, how compounding works, and a clear $10,000 example.
Read →CD vs high-yield savings
Easy access vs locking money for a term, insurance basics, and how to run your own numbers.
Read →CD early withdrawal & penalties
What the CFPB says about cashing out early—and what Nestfigure’s calculator does not include.
Read →Worked examples
How much will a $10,000 CD make in one year?
Build-time Nestfigure math at sample APYs for $10k · 12 months—not a live bank rate.
Read →How much will a $10,000 CD make in 6 months?
Half-year sample APY table for $10k with calculator deep links and CFPB caveats.
Read →What if I put $20,000 in a CD for 5 years?
Five-year $20k sample balances, liquidity tradeoffs, and early-withdrawal notes from CFPB.
Read →How much will $100,000 make in a 6 month CD?
Six-month $100k sample math plus FDIC/NCUA insurance pointers (no fake rates).
Read →Questions & how we calculate
Salary increase
Raise Calculator
Percent and hourly raise guides, sample examples, common questions, and the math behind Nestfigure’s free raise tool.
Guides
How to calculate a raise percentage
Simple raise formulas, a worked $60,000 / 5% example, and the free raise calculator.
Read →Hourly to annual raise math
Turn hourly pay into yearly pay, then apply a raise percent to see the new amounts.
Read →Raise vs bonus (math only)
Base-pay raise vs one-time bonus numbers—Nestfigure does not choose for you.
Read →Worked examples
How much is a 5% raise on $60,000?
Stated-sample arithmetic only: $60k + 5% with period breakdown and prefilled calculator.
Read →What is a 5% raise on $20 an hour?
Hourly sample at 40×52 stated schedule—new rate, annualized dollars, and calculator link.
Read →What would a 3% raise on $70,000 look like?
Stated $70k sample with 3% (and nearby percents)—monthly/weekly views and deep links.
Read →How much is a 10% raise on $50,000?
Stated $50k + 10% sample table, period splits, and link to model your own numbers.
Read →Questions & how we calculate
Debt payoff
Credit Card Payoff
Plain-language guides, worked payoff examples, common questions, and the math behind Nestfigure’s free credit card tool.
Guides
How credit card interest works
APR in plain words, monthly interest ideas, and a clear $5,000 sample path.
Read →Minimum payment vs fixed payment
Why minimum-style plans can take longer, with a side-by-side sample and CFPB links.
Read →How to use a payoff calculator
Step-by-step inputs, what results mean, prefills, and what Nestfigure leaves out.
Read →Worked examples
Pay off $5,000 at 22% with $150/month?
Sample math only: $5,000 balance, 22% APR input, $150 fixed monthly payment.
Read →Pay off $10,000 in 36 months at 18%?
Sample math: required monthly payment to clear $10,000 in 36 months at 18% APR input.
Read →Minimum-style vs extra on $2,500 at 24%
Sample educational minimum-style model vs a higher fixed payment on $2,500 at 24% APR.
Read →Questions & how we calculate
Hourly pay
Overtime Calculator
Plain-language guides, worked OT examples, common questions, and the math behind Nestfigure’s free overtime tool.
Guides
How overtime pay is calculated
Regular, OT, and double-time formulas with a clear $20/hour sample week.
Read →Time-and-a-half vs double-time
1.5× and 2× multipliers side by side—math only, not legal rules.
Read →How to use an overtime calculator
Inputs, results, prefills, and what Nestfigure will not decide for you.
Read →Worked examples
$20/hour with 10 OT hours at 1.5×?
Sample week: $20 rate, 40 regular + 10 OT at time-and-a-half—not payroll advice.
Read →$25/hour with 8 OT hours at 1.5×?
Sample week arithmetic for $25 rate and 8 OT hours at 1.5× multiplier.
Read →$18/hour with OT and double-time hours?
Sample week: regular, 1.5× OT, and 2× double-time hours—stated multipliers only.
Read →Questions & how we calculate
Take-home pay
Paycheck Calculator
Guides, worked take-home examples, common questions, and the math behind Nestfigure’s free paycheck tool.
Guides
How take-home is estimated
Gross to net path with a tax rate you type, plus IRS Pub 15-T context.
Read →Weekly vs biweekly vs monthly
How annual salary splits across common paycheck schedules.
Read →How to use a paycheck calculator
Step-by-step inputs, prefills, and honest limits.
Read →Worked examples
$60,000 biweekly take-home at 22% tax estimate?
Sample annual salary, biweekly pay, user-typed 22% combined tax estimate—not IRS brackets.
Read →$25/hour weekly take-home at 20% estimate?
Sample hourly week (40×52) with a user-typed 20% tax estimate.
Read →$75,000 monthly with $200 pre-tax deduction?
Sample salary, monthly pay, $200 pre-tax per check, 25% tax estimate on remaining taxable pay.
Read →Questions & how we calculate
Installment loans
Loan Calculator
Guides, worked payment examples, common questions, and the math behind Nestfigure’s free loan calculator.
Guides
How loan payments are calculated
Fixed-rate installment formulas with a clear $10,000 sample.
Read →Loan term vs monthly payment
How longer terms change payment and total interest.
Read →How to use a loan calculator
Inputs, schedule, term compare, and limits.
Read →Worked examples
$10,000 loan at 8% for 36 months?
Sample installment math: payment, interest, and schedule for $10k · 8% · 36 months.
Read →$20,000 loan at 6% for 60 months?
Sample 5-year term payment and interest for $20k at 6% APR input.
Read →$15,000 at 10% with $50 extra per month?
Sample base payment vs adding $50 extra principal each month.
Read →Questions & how we calculate
Student loan
Student Loan Calculator
Guides, worked payment examples, common questions, and the math behind Nestfigure’s free student loan tool.
Guides
How student loan payments are calculated
Fixed-rate amortization with a clear $30,000 sample.
Read →Student loan term vs monthly payment
How 10-, 15-, and 20-year terms change payment and interest.
Read →How to use a student loan calculator
Inputs, results, prefills, and limits.
Read →Worked examples
$30,000 student loan at 5.5% for 10 years?
Sample fixed-rate payment and interest for a common 10-year term.
Read →$50,000 student loan at 6% for 20 years?
Longer-term sample—lower payment, higher total interest under the model.
Read →$25,000 at 7% with $100 extra per month?
Sample base payment vs adding $100 extra principal each month.
Read →Questions & how we calculate
Car loan
Auto Loan Calculator
Guides, worked car payment examples, common questions, and the math behind Nestfigure’s free auto loan tool.
Guides
How auto loan payments are calculated
Amount financed and fixed-rate car payment with a clear sample.
Read →Auto loan term vs monthly payment
How 48-, 60-, and 72-month terms change payment and interest.
Read →How to use an auto loan calculator
Inputs, results, prefills, and limits.
Read →Worked examples
$30,000 car · 10% down · 7% · 60 months?
Sample auto payment math with down payment and fixed-rate amortizing loan.
Read →$25,000 car · $2,000 trade-in · 6.5% · 48 months?
Sample with trade-in reducing the amount financed.
Read →$40,000 car · 5% tax · 8% APR · 72 months?
Sample including a sales tax percent you type into the financed amount.
Read →Questions & how we calculate
Save toward a target
Savings Goal Calculator
Guides, worked savings timelines, common questions, and the math behind Nestfigure’s free savings goal tool.
Guides
How to calculate a savings goal timeline
Start balance, goal, monthly deposits, and optional APY growth.
Read →Monthly deposits vs APY growth
How deposits and modeled interest each move you toward a target.
Read →How to use a savings goal calculator
Inputs, results, prefills, and honest limits.
Read →Worked examples
Reach $10,000 from $0 at $200/month?
Sample path with $200 monthly deposits and a sample 4% APY input.
Read →Build a $5,000 emergency fund from $500?
Sample emergency-fund style goal: start $500, deposit $150/month, sample 3% APY.
Read →Reach $25,000 at $500/month from $2,000?
Sample larger goal with $500 monthly deposits and a sample 4.5% APY input.
Read →Questions & how we calculate
Growth math
Compound Interest Calculator
Guides, worked growth examples, common questions, and the math behind Nestfigure’s free compound interest tool.
Guides
How compound interest works
Plain formulas and a clear $10,000 sample growth path.
Read →Compounding frequency explained
Annual vs monthly vs daily vs continuous on the same sample.
Read →How to use a compound interest calculator
Inputs, results, prefills, and limits.
Read →Worked examples
$10,000 at 5% for 10 years?
Sample growth with monthly compounding and no extra deposits.
Read →$5,000 start + $200/month for 5 years?
Sample principal plus monthly deposits at a sample 5% rate, monthly compounding.
Read →$1,000 at 7% for 20 years?
Long-horizon sample at 7% with annual compounding—illustrative only.
Read →Questions & how we calculate
Principal only
Simple Interest Calculator
Guides, worked I = P × r × t examples, common questions, and the math behind Nestfigure’s free simple interest tool.
Guides
How simple interest works
Plain I = P × r × t with a clear $10,000 sample.
Read →Simple vs compound interest
Side-by-side comparison on the same sample inputs.
Read →How to use a simple interest calculator
Inputs, results, prefills, and limits.
Read →Worked examples
$10,000 at 5% simple interest for 3 years?
Sample I = P × r × t math with no compounding.
Read →$5,000 at 6% simple interest for 2 years?
Short-horizon sample using the simple interest formula only.
Read →$2,000 at 4% simple interest for 5 years?
Longer sample path with year-by-year simple interest totals.
Read →Questions & how we calculate
Return math
ROI Calculator
Guides, worked return examples, common questions, and the math behind Nestfigure’s free ROI tool.
Guides
What is ROI?
Plain definition with a clear $10,000 sample path.
Read →ROI vs annualized return
Total return versus CAGR-style yearly rate.
Read →How to use an ROI calculator
Inputs, results, prefills, and limits.
Read →Worked examples
ROI on $10,000 growing to $15,000 in 3 years?
Sample total ROI and annualized return on a clear path.
Read →ROI on $5,000 growing to $7,500 in 5 years?
Longer holding period sample with annualized return.
Read →ROI if $20,000 falls to $16,000?
Negative ROI sample—losses are part of transparent math.
Read →Questions & how we calculate
Retirement
401(k) Calculator
Guides, worked contribution and match examples, common questions, and the math behind Nestfigure’s free 401(k) tool.
Guides
How 401(k) employer match works
Plain match formula with a clear $80,000 sample.
Read →401(k) contribution percent explained
How deferral % changes your dollars and match.
Read →How to use a 401(k) calculator
Inputs, results, prefills, and limits.
Read →Worked examples
401(k) on $80,000 with 6% deferral and 50% match up to 6%?
Sample employee + employer annual dollars and optional growth.
Read →What match do I miss at 3% on a 50% up to 6% plan?
Sample showing unmatched potential when deferral is below the match window.
Read →401(k) on $100,000 with 10% deferral and 100% match up to 4%?
Dollar-for-dollar match sample with a 4% salary window.
Read →Questions & how we calculate
Cost math
Break-Even Calculator
Guides, worked cost examples, common questions, and the math behind Nestfigure’s free break-even tool.
Guides
What is break-even point?
Plain definition with a clear fixed-cost sample.
Read →Contribution margin explained
How price minus variable cost drives break-even.
Read →How to use a break-even calculator
Inputs, results, prefills, and limits.
Read →Worked examples
Break-even with $10,000 fixed, $50 price, $30 variable?
Classic contribution-margin sample for units and revenue.
Read →Break-even with $5,000 fixed, $25 price, $10 variable?
Smaller fixed-cost sample with wider unit margin.
Read →Break-even with $20,000 fixed, $100 price, $70 variable?
Higher fixed costs and thinner margin sample path.
Read →Questions & how we calculate
Drawdown
How Long Will Savings Last?
Guides, worked runway examples, common questions, and the math behind Nestfigure’s free savings duration tool.
Guides
How long will savings last—explained
Plain runway math with a clear $100,000 sample.
Read →Withdrawal rate vs runway
How monthly draws map to annual rate and months left.
Read →How to use the savings duration calculator
Inputs, results, prefills, and limits.
Read →Worked examples
How long does $100,000 last at $2,000/month?
Sample drawdown with optional growth—educational only.
Read →How long does $250,000 last at $1,500/month with 4% growth?
Sample balance, fixed withdrawal, and a sample annual return you type.
Read →How long does $50,000 last at $1,000/month?
Shorter-horizon sample with zero growth for clear math.
Read →Questions & how we calculate
Purchasing power
Inflation Calculator
Guides, worked purchasing-power examples, common questions, and the math behind Nestfigure’s free inflation tool.
Guides
How inflation affects purchasing power
Plain explanation with a $100 sample and BLS CPI pointer.
Read →Average inflation rate explained
What a constant average rate means in learning models.
Read →How to use an inflation calculator
Inputs, results, prefills, and limits.
Read →Worked examples
What is $100 after 10 years at 3% inflation?
Sample future cost: $100 today after 10 years at a 3% average annual inflation input.
Read →What is a $50,000 salary after 5 years at 3% inflation?
Sample purchasing-power path for a $50,000 amount over 5 years at 3% average inflation input.
Read →What was $1,000 today worth 20 years ago at 3%?
Sample past-value view: strip 3% average inflation for 20 years from $1,000.
Read →Questions & how we calculate
Debt ratios
Debt-to-Income Calculator
Guides, worked DTI examples, common questions, and the math behind Nestfigure’s free debt-to-income tool.
Guides
What is debt-to-income ratio?
Plain definition with a clear sample and free calculator.
Read →Front-end vs back-end DTI
Housing-only vs total debt ratios side by side.
Read →How to use a DTI calculator
Inputs, results, prefills, and limits.
Read →Worked examples
DTI on $6,000 income with $1,800 housing + $400 other?
Sample monthly gross and debt payments—front-end and back-end DTI math only.
Read →DTI on $72,000 salary with $1,500 housing + $500 other?
Sample annual salary converted to monthly gross for DTI arithmetic.
Read →DTI on $5,000 income with higher non-housing debt?
Sample where other debts are large relative to housing—back-end DTI focus.
Read →Questions & how we calculate
Home loan
Mortgage Calculator
Guides, worked payment examples, common questions, and the math behind Nestfigure’s free mortgage tool.
Guides
How mortgage payments are calculated
Loan amount, fixed-rate P&I formula, and a clear sample.
Read →15-year vs 30-year mortgage math
How term length changes payment and total interest.
Read →How to use a mortgage calculator
Inputs, results, prefills, and limits.
Read →Worked examples
$400,000 home · 20% down · 6.5% · 30 years?
Sample fixed-rate payment math for a common price and down payment illustration.
Read →$300,000 home · 10% down · 6% · 30 years?
Sample loan amount after a smaller down payment, fixed rate amortization only.
Read →$350,000 · 20% down · 15-year vs 30-year at 6%?
Sample term comparison: same price and rate, different lengths.
Read →Questions & how we calculate
Refinance
Mortgage Refinance Calculator
Guides, worked refinance examples, common questions, and the math behind Nestfigure’s free refinance tool.
Guides
How mortgage refinance math works
Current vs new path, payment, and interest comparison.
Read →Refinance break-even explained
How cash closing costs and monthly savings define break-even.
Read →How to use a mortgage refinance calculator
Inputs, results, prefills, and limits.
Read →Worked examples
Refinance $300,000 from 6.5% to 5.5% (30-year)?
Sample payment drop and break-even on $4,000 closing costs.
Read →Refinance $250,000 from 7% to 6% into a 15-year?
Shorter new term sample—payment may rise while total interest falls.
Read →Refinance $200,000 with $3,000 costs rolled into the loan?
Sample where closing costs increase the new principal.
Read →Questions & how we calculate
Payment schedule
Biweekly Mortgage Calculator
Guides, worked biweekly examples, common questions, and the math behind Nestfigure’s free biweekly mortgage tool.
Guides
How biweekly mortgage payments work
Half the monthly payment every two weeks—why interest can fall.
Read →Biweekly vs monthly mortgage
Side-by-side payment, interest, and payoff time.
Read →How to use a biweekly mortgage calculator
Inputs, results, prefills, and limits.
Read →Worked examples
Biweekly payments on a $300,000 loan at 6.5% for 30 years?
Sample monthly vs biweekly payoff and interest savings.
Read →Biweekly payments on a $250,000 loan at 6% for 30 years?
Mid-size sample path with monthly vs biweekly interest.
Read →Biweekly payments on a $400,000 loan at 7% for 15 years?
Shorter-term sample—biweekly still trims interest under the model.
Read →Questions & how we calculate
Budget split
50/30/20 Budget Calculator
Guides, worked 50/30/20 examples, common questions, and the math behind Nestfigure’s free budget allocation tool.
Guides
What is the 50/30/20 budget rule?
Needs, wants, and savings shares in plain language.
Read →Needs vs wants in a budget
How to separate essentials from lifestyle spending.
Read →How to use a 50/30/20 budget calculator
Inputs, results, prefills, and limits.
Read →Worked examples
50/30/20 budget on $5,000 monthly take-home?
Classic split: needs, wants, and savings dollars.
Read →50/30/20 budget on $72,000 annual take-home?
Annual income converted to monthly buckets for learning.
Read →50/30/20 on $4,000 with sample actual spending?
Targets vs sample actual needs/wants/savings variance.
Read →Questions & how we calculate
Everyday money
Tip Calculator
Guides, worked tip examples, common questions, and the math behind Nestfigure’s free tip and bill-split tool.
Guides
How restaurant tip math works
Tip base × percent in plain language.
Read →How to split a restaurant bill with tip
Even split of bill plus tip.
Read →How to use a tip calculator
Inputs, results, prefills, and limits.
Read →Worked examples
20% tip on an $80 restaurant bill?
Classic 20% sample—tip and total.
Read →18% tip on $150 split 4 ways?
Group dinner: tip, total, and per person.
Read →15% tip on $45 with sample tax, pretax base?
Tip on pretax subtotal when tax is listed.
Read →Questions & how we calculate
Cash buffer
Emergency Fund Calculator
Guides, worked runway examples, common questions, and the math behind Nestfigure’s free emergency fund target tool.
Guides
What is an emergency fund?
Cash buffer measured in months of expenses.
Read →How many months of expenses?
Why people use 3–6 month teaching targets.
Read →How to use an emergency fund calculator
Inputs, results, prefills, and limits.
Read →Worked examples
Emergency fund for $3,000 monthly expenses · 6 months?
Classic 6-month target from essential expenses.
Read →$5,000 expenses · 3-month target · $8,000 saved?
Target vs current cash—months covered and shortfall.
Read →Emergency fund for $2,500 expenses · 12 months?
Larger runway sample for teaching only.
Read →Questions & how we calculate
Balance sheet
Net Worth Calculator
Guides, worked balance-sheet examples, common questions, and the math behind Nestfigure’s free net worth tool.
Guides
What is net worth?
Assets minus liabilities in plain language.
Read →Assets vs liabilities explained
What to put on each side of the snapshot.
Read →How to use a net worth calculator
Inputs, results, prefills, and limits.
Read →Worked examples
Net worth with $150k assets and $80k debts?
Sample positive net worth snapshot.
Read →Net worth with $50k assets and $120k debts?
Sample negative net worth for teaching.
Read →Net worth with $250k assets and $100k debts?
Larger sample balance sheet for learning.
Read →Questions & how we calculate
Everyday money
Percent Off Calculator
Guides, worked discount examples, common questions, and the math behind Nestfigure’s free percent-off tool.
Guides
How percent-off discounts work
Original × percent = savings.
Read →Discount then sales tax order
Why tax often applies after the sale price.
Read →How to use a percent-off calculator
Inputs, results, prefills, and limits.
Read →Worked examples
20% off a $100 item?
Classic discount sample—savings and sale price.
Read →30% off a $79.99 item?
Common retail price sample.
Read →15% off $50 plus 8% sample tax?
Discount first, then sample tax on sale price.
Read →Questions & how we calculate
Income
Commission Calculator
Guides, worked commission examples, common questions, and the math behind Nestfigure’s free commission tool.
Guides
How commission pay works
Sales × rate in plain language.
Read →Base salary plus commission
How base and commission add for a period.
Read →How to use a commission calculator
Inputs, results, prefills, and limits.
Read →Worked examples
5% commission on $100,000 sales?
Straight commission sample—no base pay.
Read →8% on $50,000 sales plus $2,000 base?
Base pay + commission total for the period.
Read →3% on $250,000 sales with $2,000 draw?
Gross commission vs net after a sample draw.
Read →Questions & how we calculate
Wages
Hourly to Salary Calculator
Guides, worked conversion examples, common questions, and the math behind Nestfigure’s free hourly to salary tool.
Guides
How hourly to salary conversion works
Rate × hours × weeks for annual pay.
Read →Full-time hours and annual pay
Why people use 40×52 as a teaching default.
Read →How to use an hourly to salary calculator
Inputs, results, prefills, and limits.
Read →Worked examples
$20/hour to annual salary (40 hrs/week)?
Classic full-time conversion sample.
Read →$25/hour to annual salary (40 hrs/week)?
Full-time sample at a higher hourly rate.
Read →$18/hour · 35 hrs + 5 OT hrs/week?
Part regular schedule plus sample overtime hours.
Read →Questions & how we calculate
Everyday money
Sales Tax Calculator
Guides, worked sales tax examples, common questions, and the math behind Nestfigure’s free sales tax tool.
Guides
How sales tax is calculated
Pretax × rate, then add for total.
Read →Reverse sales tax from a total
Find pretax when only the total is known.
Read →How to use a sales tax calculator
Inputs, modes, prefills, and limits.
Read →Worked examples
8% sales tax on $100?
Classic add-tax sample—tax and total.
Read →7.25% sales tax on $49.99?
Retail price sample with a common rate format.
Read →What pretax amount makes $108 total at 8%?
Reverse mode: total with tax → pretax and tax.
Read →Questions & how we calculate
How much house?
Home Affordability Calculator
Guides, worked max-price examples, common questions, and the math behind Nestfigure’s free affordability tool.
Guides
How home affordability is estimated
Income, sample DTI caps, and reverse amortization to a max price.
Read →DTI caps and home-buying budget
How front-end and back-end samples shape housing room.
Read →How to use a home affordability calculator
Inputs, results, prefills, and limits.
Read →Worked examples
How much house on $80,000 income with 20% down?
Sample front/back DTI caps, 6.5% rate, 30-year term—educational only.
Read →How much house on $6,000 monthly income with 10% down?
Monthly income sample with higher DTI headroom and 7% rate.
Read →How much house on $120,000 income with a 15-year loan?
Higher income sample with shorter term and 5% down.
Read →Questions & how we calculate
YMYL notice: This site is for education only. It is not financial, tax, or investment advice. Nestfigure is not a bank, credit union, broker, investment adviser, or fiduciary. Product terms, rates, and penalties vary—always read your institution’s disclosures before acting. Calculator results are mathematical estimates, not bank quotes.