Privacy Notice

Calculator entries stay in the browser

Income, pension, Gift Aid, Child Benefit, child-age and childcare-spending entries are processed by JavaScript running on the user’s device. The application does not submit those values to a server endpoint or store them in a database. They exist in page memory while the calculator is open and are cleared when the page is reloaded or closed.

The site does not place calculator values in the page address, query string or shareable URL. That avoids exposing sensitive figures through browser history, copied links or ordinary request logs. A copied summary contains the figures shown on screen, so users should decide carefully where they paste or send it. The website cannot control a destination chosen by the user.

Clipboard and printing features

The ‘Copy summary’ button accesses the browser clipboard only after it is pressed. It writes a plain-text estimate containing adjusted net income, Child Benefit, HICBC, Personal Allowance and childcare income statuses. The application does not read existing clipboard contents. Browser permission behaviour may differ by device and security settings.

The ‘Print results’ button invokes the browser’s print dialog. Print styling hides the interactive form and keeps the result summary readable. A printout or PDF saved by the user is outside this website’s control and may contain sensitive financial information. Users should store, share and dispose of that output as they would any other personal financial document.

Cookies, analytics and advertising

The site uses Vercel Web Analytics for anonymous page views and three custom events: calculator start, calculator completion and a guide-to-calculator click. Vercel documents this product as cookie-free. The event helpers accept only a static page or surface label — never income, pension, Gift Aid, childcare spending, child details, calculation results or free text.

Google Analytics 4 is optional and loads only after you select Accept analytics. It uses analytics cookies to measure page views and the same three kinds of interaction. Income, pension, Gift Aid, childcare spending, child details, calculation results and free text are never included. Page locations and referrers exclude query strings and fragments. Google signals and advertising personalization are disabled.

Select Reject analytics to use the calculator without Google Analytics. The Analytics preferences button in the footer lets you change or withdraw your choice at any time; withdrawal stops further Google Analytics collection. A versioned preference is saved in browser local storage so the site can remember your choice. If that storage is unavailable, the choice lasts for the current page. The cookie-free Vercel measurement described above continues independently. Ordinary hosting and security logs are covered separately below.

Hosting and technical logs

Like most websites, the hosting and network providers used for a deployed copy may process ordinary technical information needed to deliver and secure the service. That can include an IP address, request time, requested page, browser information and security signals. Retention and precise handling depend on the chosen deployment provider’s configuration and privacy terms.

Calculator field values are not included in application requests by this codebase, so they should not appear in ordinary server access logs. Deployment owners remain responsible for reviewing platform settings, access controls, retention and any additional tooling they enable. This repository does not add a user-account system; its analytics integrations are the Vercel and optional Google Analytics measurement disclosed above.

Links to official services

The website links to GOV.UK, HMRC, Department for Education and official devolved-nation services. Following one of those links leaves this application. The destination may set its own cookies, keep its own logs or ask for information under its own privacy notice. This site does not receive the information entered into an official eligibility, tax or childcare account service.

External links open the official page so that a user can verify rules and complete actions the calculator cannot perform. A displayed source label and destination URL make that transition visible. Users should check the address bar before entering personal information and should use official contact routes if they need help with an account, claim, tax charge or childcare code.

Children’s information, questions and changes

The calculator asks only for broad child age groups and the number of children needed for an estimate. It does not ask for a child’s name, date of birth, address, school, provider or account code. Parents and carers should not paste identifying details into copied summaries. The tool is intended for adults assessing family-finance rules, not for children to create an account.

This privacy notice was updated on 6 October 2026. If the deployment owner adds a contact channel, privacy questions should be directed through that published route. Material changes to storage, analytics, cookies or third-party services should be reflected here and in the update log before release.