Privacy policy
Last updated October 23, 2026
Zhen Zhong CPA runs this portal (portal.zhenzhong.us) so that our clients can send us their tax documents. This page explains what the portal collects, what we do with it, and who handles it for us.
What we collect
- To sign you in: your email address or mobile number. If you choose “Continue with Google”, Google tells us your email address, the name on your Google account and your Google account ID; we use the name only to fill in your name on the upload page, where you can change it. We never receive your Google password, your contacts or anything else in your Google account.
- What you send us: the documents you upload, and what you type on the upload page, such as a new mailing address or the bank account for your refund.
- Records of use: the time of each sign-in and upload and the internet (IP) address it came from.
How we use it
To prepare your tax returns and provide our accounting services, to sign you in, and to contact you about your documents. We do not sell your information, and we do not use it for advertising.
Who handles it for us
We use these service providers, only for the purposes above:
- Google: “Continue with Google”; the Gmail account that sends sign-in codes and our internal notices; Google Drive, where copies of your uploaded documents are kept for our staff; and Google’s Gemini AI service, which reads the text of your documents so we can enter their figures.
- Twilio: sends sign-in codes by text message.
- Geocodio: checks a mailing address you enter on the upload page.
Everything else, including turning your scanned pages into text, runs on our own computers. We also share information when the law requires it, and with tax authorities when we file your return.
How long we keep it
The portal deletes the uploaded files on its own server, and its working copies of them, after 30 days. The copies in our Google Drive and the documents we use for your return are part of your client file, which we keep as professional rules and the law require.
How we protect it
The portal works only over an encrypted (HTTPS) connection, and you sign in with a one-time code or with Google. What you upload is seen only by our staff and handled only by the service providers above, for the purposes above.
Your choices
You can ask us to show you, correct or delete the information we hold about you, except records the law requires us to keep. Contact your preparer at Zhen Zhong CPA.