Privacy in this temporary review
How these city tools, website requests and external checkout handle data. Read the site privacy notice for website-wide information and contact details.
Inputs stay in the current page
Calculators, source filters, the budget checklist and correction notes run in your browser. These features have no account system, analytics collector, advertising tags or remote form submission. Their code does not set cookies or use browser storage.
The source-case filter and the legacy design parameter can appear in the URL and browser history. Custom financial inputs are not added to the URL. A downloaded cash schedule or correction note creates a file under your control.
Host access and external links
These pages are hosted on Cloudflare and are publicly accessible. Hosting requests and security features are handled by Cloudflare. The local calculators and note tools described above operate separately from the host’s request processing.
Financial-model offers use Shopify functionality and open the selected merchant checkout. Shopify and the merchant handle connection and purchase information under their own notices. Calculator inputs are not automatically transferred to checkout or the purchased workbook. Source links open other providers with their own data practices.
Correction notes are local
The correction tool does not send a message. You can copy or download a note after checking it. Use the current site email below to send a reviewed note. No response time is promised. Avoid adding personal, customer or confidential financial details.
Site-wide privacy information
For site-wide handling of information you email to Startup Costs, read the current privacy notice. Use the contact below for a specific privacy question; this local tool does not confirm message receipt.
Current site contact
For support, policy questions and corrections, email [email protected]. Include the page URL and the issue or claim.
Contact and correction guidance · Current privacy notice · Current terms of use
Financial information disclaimer
Published research and calculations support business planning and education. They are not personalized financial, investment, tax or legal advice, and they do not guarantee costs, revenue, profit or financing. Estimates depend on the stated format, location, source periods and assumptions. Check the requirements and commitments that apply to your circumstances.