BizToolStack
Free calculators and invoices for freelancers and online sellers: payment and marketplace fees, pricing, 1099 taxes and PDF invoices.
A startup from Sheridan, the United States that is founded by Zold LLC.
Free calculators and invoices for freelancers and online sellers: payment and marketplace fees, pricing, 1099 taxes and PDF invoices.
A startup from Sheridan, the United States that is founded by Zold LLC.
This page is designed to help you find out whether BizToolStack is good and if it is the right choice for you.
BizToolStack is a free set of calculators and document tools for freelancers, small businesses and online sellers.
Payment fees: Stripe, PayPal, Venmo and Square fee calculators, with a "what to charge" mode to receive a target amount.
Marketplace seller fees: Etsy, Poshmark and Mercari calculators that show every fee and what you actually keep.
Pricing & profit: markup, retail price, wholesale price, cost-plus and gross profit calculators.
Freelancer taxes: 2026 self-employment tax and 1099 tax estimates, including a quarterly set-aside amount.
Paperwork: invoice and estimate generators with PDF download.
Every rate links to its official source (IRS, SSA, Etsy, Square, PayPal and others) with a last-verified date. There is no account, and nothing you type is saved to a server.
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Payment fee calculators
Stripe, PayPal, Venmo and Square fees, plus what to charge to receive a target amount
Marketplace seller fees
Etsy, Poshmark and Mercari fees and what you actually keep
Pricing calculators
Markup, retail, wholesale, cost-plus and gross profit
Freelancer tax estimates
2026 self-employment and 1099 tax, with a quarterly set-aside amount
Invoices and estimates
Create professional PDF invoices and estimates in the browser
Sourced rates
Every rate links to its official source with a last-verified date
Every fee and tax rate links to its official source (IRS, SSA, Etsy, Square, PayPal and others) with the date it was last verified, and the site refuses to build if a rate goes unchecked for more than 92 days. All calculations run in your browser with exact decimal math, and nothing you type is sent to a server.
It is free with no signup, and it covers the whole job in one place: set a price, check what Etsy or Stripe will take, estimate the tax on what you keep, then send an invoice. Most fee calculators only cover one platform and do not show where their rates come from.
US freelancers, independent contractors, small business owners and online sellers on Etsy, Poshmark, Mercari and similar marketplaces.
BizToolStack started as a simple markup calculator and grew into a set of tools for the questions small sellers and freelancers ask every week: what will this platform take, what should I charge, and how much should I set aside for taxes.
Astro, React and TypeScript, with big.js for exact decimal math, Valibot for data validation and pdfmake for PDF generation. The site is static and runs on Cloudflare.
We have collected here some useful links to help you find out if BizToolStack is good.
Check the traffic stats of BizToolStack on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
Check the "Domain Rating" of BizToolStack on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of BizToolStack's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.
Check the "Domain Authority" of BizToolStack on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.
The latest comments about BizToolStack on Reddit. This can help you find out how popualr the product is and what people think about it.
Do you know an article comparing BizToolStack to other products?
Suggest a link to a post with product alternatives.
Is BizToolStack good? This is an informative page that will help you find out. Moreover, you can review and discuss BizToolStack here. The primary details have been verified within the last quarter. So they could be considered up to date. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.
