Smart Bookkeeping for Smart Sellers
Interactive calculators to help manage your eCommerce finances
Calculate your true profit margins by accounting for all costs including product, shipping, fees, and advertising expenses.
Calculate Profit →Determine your Cost of Goods Sold including inventory, manufacturing, shipping, and direct labor costs for accurate financial reporting.
Calculate COGS →Calculate sales tax obligations across multiple states and platforms to ensure compliance with tax regulations.
Calculate Tax →Estimate quarterly tax payments based on your income, deductions, and business structure to avoid penalties.
Estimate Taxes →Determine how many units you need to sell to cover all costs and start generating profit for your business.
Find Break-Even →Calculate return on investment for products, advertising campaigns, or business decisions to optimize spending.
Calculate ROI →Calculate your self-employment tax liability including Social Security and Medicare taxes for sole proprietors.
Calculate SE Tax →Determine potential tax savings by electing S-Corporation status and optimizing your salary vs. distribution split.
Calculate Savings →All calculators are completely free to use with no hidden fees or registration required.
Get instant calculations as you input your data with no waiting or complex formulas.
Use our calculators on any device - desktop, tablet, or smartphone for on-the-go calculations.
Designed specifically for online sellers with platform fees, shipping costs, and marketplace considerations.