Finance
Make smarter personal finance and business decisions with our straightforward, transparent financial calculators. Estimate store sales discounts and stacked coupons, calculate wholesale-to-retail markups and profit margins, forecast certificate of deposit returns, build a debt payoff schedule for your credit cards, or calculate fair overtime compensation.
All Finance Tools (83)
CD Calculator
Calculate interest earned, ending balance, and annual percentage yield (APY) on Certificate of Deposit accounts.
Credit Card Payoff Calculator
Calculate how quickly you can eliminate credit card balances and how much interest you save with larger payments.
Dividend Calculator
Calculate annual and monthly dividend income, DRIP reinvestment growth, and portfolio yield.
Overtime Calculator
Calculate time-and-a-half (1.5x) and double-time (2.0x) overtime pay and gross paycheck earnings.
Discount Calculator – Sale Price & Savings
Calculate final sale prices, total dollar savings, stacked coupons, and sales tax amounts.
Markup Calculator – Cost to Selling Price
Calculate selling price, gross dollar profit, and profit margin from wholesale cost and desired markup percentage.
Profit Margin Calculator – Gross & Net Margins
Calculate gross profit, net operating profit, margin percentages, and equivalent markup from revenue and expenses.
Simple Interest Calculator with Amortization Schedule
Calculate simple interest accrued over years, months, or days with exact principal and total repayment breakdowns.
APR Calculator (Annual Percentage Rate with Fees)
Determine the true annual percentage rate of any loan including upfront origination fees, points, and recurring finance charges.
ROI Calculator (Return on Investment & Annualized ROI)
Calculate total return on investment percentage, dollar gain, and annualized return (CAGR) over any time period.
Tip Calculator & Bill Splitter
Calculate tip amounts, total bills, and even splits among friends with convenient round-up options.
Amortization Calculator (Mortgage & Loan Schedule)
Calculate monthly loan payments, lifetime interest, and generate an amortization schedule table showing extra payment savings.
Rent Calculator (Affordability & Proration)
Calculate rent affordability based on annual income (30% rule & 40x rule), or compute prorated move-in rent.
CPM Calculator (Cost Per Thousand Impressions)
Calculate online advertising CPM (cost per 1,000 impressions), total campaign costs, required impressions, CTR, and CPC.
Student Loan Calculator & Payoff Acceleration
Calculate monthly student loan payments, total interest, and test extra monthly principal payments to accelerate payoff.
401k Calculator: Retirement Growth & Employer Match
Project your 401(k) nest egg with salary growth, investment returns, and employer matching.
Roth IRA Calculator: Tax-Free Growth & Retirement Balance
Forecast tax-free Roth IRA compound growth and compare post-tax distributions.
Margin Calculator: Gross Margin, Markup & Profit Formula
Compute gross profit margin, markup percentage, and optimal selling prices.
Sales Tax Calculator: Add Tax or Reverse Calculate Price
Add sales tax to net prices or reverse-calculate pre-tax amounts from gross totals.
RMD Calculator: IRS Required Minimum Distribution 2026
Compute mandatory annual IRS retirement distributions under SECURE 2.0 rules.
BAH Calculator: Military Basic Allowance for Housing Rates
Estimate military Basic Allowance for Housing (BAH) rates by rank and location.
Take-Home Pay Calculator: Net Pay & Salary After Taxes
Compute your true take-home paycheck after federal, state, and FICA tax withholdings.
Savings Calculator: Compound Interest & Monthly Growth
Forecast compound interest growth from initial deposits and monthly savings additions.
Salary to Hourly Calculator: Convert Annual Pay to Wage
Convert annual base salary into exact hourly, daily, and weekly wage equivalents.
eBay Fee Calculator: Calculate Final Value Fees & Profit
Compute eBay final value fees, shipping costs, and net seller profit margins.
Refinance Calculator: Breakeven Point & Monthly Savings
Determine monthly payment savings and the breakeven timeline for mortgage refinancing.
Fuel Cost Calculator: Road Trip Gas Price & Mileage Cost
Estimate total trip fuel costs, gallons consumed, and expense splits per passenger.
Closing Cost Calculator: Home Buyer & Seller Costs 2026
Estimate total home purchase closing costs and itemized lender, title, and escrow fees.
Interest Rate Calculator: Calculate APR, EAR & Interest
Compute effective annual interest rates, nominal APR, and total loan finance charges.
Toll Calculator: Highway, Bridge & Turnpike Toll Estimator
Estimate route toll expenses and compare electronic transponder discounts.
Property Tax Calculator: Home Assessment & Mill Rate
Compute annual property tax obligations and monthly escrow amounts from mill rates.
Options Calculator: Call & Put Profit, Breakeven & Payoff
Compute options profit, loss, breakeven stock prices, and return on investment.
Capital Gains Tax Calculator: Short vs Long-Term Rates
Compute federal capital gains tax liabilities on stocks, crypto, and real estate.
PayPal Fee Calculator: Merchant & Invoicing Fees 2026
Compute PayPal merchant transaction fees and reverse-calculate invoice totals.
FIRE Calculator: Financial Independence Retire Early Target
Determine your target FIRE number and projected age of financial independence.
Hourly Rate Calculator: Freelance Billing & Day Rate
Calculate target freelance hourly billing rates based on income goals and expenses.
CAGR Calculator: Compound Annual Growth Rate Formula
Compute annualized compound growth rates across multi-year investment horizons.
Emergency Fund Calculator: 3 to 12 Month Cash Target
Calculate your ideal emergency fund cash reserve based on monthly essential expenses.
Stock Average Calculator: Average Down & Cost Basis
Compute your blended average share price when buying multiple stock purchase lots.
Stock Profit Calculator: Return on Investment & Breakeven
Compute net dollar profit, percentage ROI, and breakeven share prices on stock trades.
Receipt Maker: Itemized Bill, Tax & Tip Calculator
Create itemized receipts and compute sales tax, tips, and discounts with decimal precision.
eBay Fee & Profit Calculator
Calculate eBay final value fees, shipping margins, promoted listing fees, and real net profit.
YouTube Money Calculator
Estimate YouTube ad revenue and RPM earnings based on daily views and niche CPM.
Home Equity Calculator
Calculate current home equity value, LTV ratio, and maximum cash-out HELOC limit.
Defined Benefit Pension Calculator
Estimate defined benefit pension income based on years of service and salary.
Crypto Profit Calculator
Calculate cryptocurrency trading profits, exchange fees, and net return on investment.
Loan to Value (LTV) Calculator
Calculate your mortgage Loan to Value (LTV) ratio and PMI cancellation threshold.
Profit Margin Calculator
Calculate gross profit dollar amount, profit margin percentage, and markup.
Savings Goal Calculator
Calculate required monthly savings to achieve target financial milestones.
TikTok Money Calculator
Estimate creator earnings and RPM payouts from TikTok video views.
Etsy Fee Calculator
Calculate Etsy marketplace fees, payment processing, and seller profit margins.
A/B Test Significance Calculator
Calculate statistical significance and confidence levels for A/B experiments.
Amazon FBA Calculator
Calculate Amazon FBA fulfillment fees, referral fees, and profit margins.
Lot Size Calculator
Calculate real estate lot size in acres and square feet from boundary dimensions.
Engagement Rate Calculator
Calculate audience engagement rates across social media channels and campaigns.
CTR Calculator
Calculate click-through rate percentage from impressions and clicks.
Dividend Yield Calculator
Calculate stock dividend yield percentage and total annual dividend income.
Position Size Calculator
Calculate share quantities and position sizes based on trading risk rules.
Forex Pip Calculator
Calculate Forex pip values and potential gains across currency pairs.
VAT Calculator
Add or exclude Value Added Tax (VAT) from gross and net prices.
Split Bill Calculator
Split restaurant bills and calculate gratuity evenly across friends.
Stripe Fee Calculator
Calculate Stripe merchant credit card processing fees and net payouts.
Forex Trade Calculator
Calculate Forex trade profits, pip gains, and margin requirements.
Conversion Rate Calculator
Calculate conversion rate percentage from total visitors and goals.
Mortgage Payoff Calculator
Determine how extra monthly principal payments reduce your mortgage term and interest.
HELOC Payment Calculator
Calculate interest-only draw payments and amortized principal-and-interest HELOC repayments.
RV Loan Calculator
Estimate monthly RV loan financing payments, down payments, and total interest costs.
Boat Loan Calculator
Calculate boat financing payments, marine interest rates, and total cost of ownership.
Camper Loan Calculator
Calculate financing payments and interest for travel trailers and lightweight campers.
FHA Loan Calculator
Calculate FHA mortgage payments including down payment, upfront MIP, and annual MIP premiums.
Motorcycle Loan Calculator
Calculate monthly motorcycle loan payments, interest charges, and loan amortization.
Car Lease Calculator
Calculate monthly vehicle lease payments, depreciation fees, and financing charges.
VA Loan Calculator
Calculate zero-down VA home loan payments and VA funding fee percentages for service members.
Self-Employment Tax Calculator
Calculate self-employment taxes, Social Security, Medicare, and quarterly estimated tax payments.
Cap Rate Calculator (Real Estate)
Calculate real estate capitalization rates, net operating income (NOI), and rental property cash yields.
Down Payment Calculator
Calculate home purchase down payments, remaining loan balances, and PMI requirements.
Robux to USD & Currency Calculator
Convert Robux to USD and calculate received Robux including Roblox Premium bonus tiers.
Roblox Tax Calculator (30% Marketplace Fee)
Calculate 30% Roblox marketplace fee deductions and 70% creator Robux earnings.
Wedding Budget Breakdown Calculator
Allocate your wedding budget across venue, catering, photography, and decor using standard ratios.
Bill Splitter & Tip Calculator
Split restaurant bills and dining checks evenly, calculate gratuity tips, and divide payments.
Car Cost Per Mile Calculator
Calculate total vehicle operating cost per mile including fuel, insurance, and routine maintenance.
1099 Tax Calculator
Calculate 1099 self-employment tax, federal income tax, and take-home pay.
EV Charging Cost Calculator
Calculate electric vehicle charging costs per session and annual gas savings.
Commercial Accounting & Personal Wealth Calculations
Financial success in business and personal budgeting relies on exact quantitative clarity. Confusing gross margin with retail markup, underestimating compound interest accumulation, or miscalculating overtime pay brackets can cost businesses profitability and individuals hard-earned wealth.
Toolzy's financial calculators translate complex financial formulas into intuitive, actionable decision tools. From commercial margin optimization (protecting net margins against wholesale inflation) to debt amortization and yield estimation, our tools compute every cash flow breakdown with clean graphical transparency.
Privacy is paramount when dealing with salary, revenue, or debt numbers. Because Toolzy operates 100% client-side in your web browser, zero financial figures, bank yields, or personal income amounts are transmitted across our servers or recorded in tracking databases.
Key Formulas & Mathematical Standards
Precision algorithms and verified standards powering our finance
Gross Profit Margin
Expresses the percentage of total sales revenue retained after incurring the direct costs of goods sold.
Markup Percentage
Computes the percentage added to wholesale cost to determine the final retail price point.
Compound Interest (Future Value)
Projects compounding balance where P is principal, r is annual rate, n is compounding frequency, and t is years.
Fair Labor Standards Act Overtime Pay
Standard statutory overtime multiplier for non-exempt hourly employees.
Who Uses Our Finance?
Frequently Asked Questions
Common questions about using our finance
What is the fundamental difference between markup and profit margin?▼
Markup is the percentage added to your wholesale cost to set a price. Profit margin is the percentage of the selling price that is profit. A 50% markup on a $100 item yields a $150 price, which equates to a 33.3% profit margin.
Are interest calculations based on annual percentage rate (APR) or yield (APY)?▼
Our calculators clearly differentiate between nominal APR and effective APY, taking compounding frequency (daily, monthly, annually) into account.
Are my financial numbers private when using these calculators?▼
Yes, 100%. No numbers, salaries, loan amounts, or business figures are transmitted to any server. Everything runs entirely within your device's browser session.
Can I calculate stacked discounts (e.g., 20% off plus an extra 10% coupon)?▼
Yes, our discount calculator supports sequential compound discounts to show you the true final net price and total dollar savings.
Explore Other Categories
Discover more fast, browser-based utilities across our specialized collections
Unit Converters
Exact metric & imperial conversions for weight, length, temperature & volume.
Math & Education
Percentage changes, fractions, square roots, geometry & statistics.
Date & Time
Calendar arithmetic, business day intervals, stopwatch & multi-counter.
Home & Construction
Paint coverage, pool volume, topsoil, roof pitch, square footage & materials.