Zero-knowledge client portal

The client portal even we can't read.

Files, messages and calls are encrypted in your browser before anything leaves it. Your domain, your logo — and your clients never pay a cent.

Book a 15-minute demo Try the live sandbox

For tax, accounting, legal and advisory firms. US or EU hosting.

portal.harbortax.com What you see
2025_W-2_Martinez.pdf184 KB
Drivers_License_Martinez.jpg1.2 MB
Engagement_Letter_signed.pdf96 KB
Our server What we see

x9Qe7fK2…b41c0d · 0x8f3a e91c 77d2 a0b4
Lr2mW8tN…5ce3a1 · 0x1d6b 03fe 9c41 e8a7
Hv0pS4qJ…902fdb · 0x6a0e 4b19 d3c2 7f55

Encrypted on the device before upload. No keys on our servers — ever.

Zero-knowledge encryption Password never leaves your device Two-factor authentication built in US or EU hosting Independent security review

Built for firms that hold their clients' most sensitive documents.

Tax & accounting

Collect W-2s, IDs and bank statements without email. Encryption and MFA that support your written information security plan.

Law firms

Immigration files, estate plans and closing documents, shared with the reasonable efforts your clients expect.

Advisors & family offices

Statements, trust documents and entity records in one place, with vendor documentation ready for your compliance file.

Product

Everything a client relationship needs. Nothing we can read.

Encrypted files & folders

Each file gets its own key, shared only with the people allowed to open it.

Secure messages to any email

Send a protected link instead of an attachment. Replies come back encrypted.

Chat & video calls

Encrypted conversations and peer-to-peer calls, so client talks leave WhatsApp and Zoom.

Tasks & document checklists

Track what each client still owes you. Reminders never reveal task content.

Private AI summaries

Summarize a document inside your browser. Nothing is sent to an AI provider.

Your brand, your domain

portal.yourfirm.com with your logo. Clients see your firm, not us.

Live the same day.

01

We set up your portal

On your own domain, with your logo and colors.

02

Invite staff and clients

Everyone sets a password that never leaves their device, plus a recovery key.

03

Work as usual — encrypted

Files, chat, calls and tasks are encrypted before they leave the browser.

Security

We tell you exactly what we can see. It isn't much.

What we can't see

  • File contents and file names
  • Messages, chats and call audio or video
  • Task titles, notes and due dates
  • Your password — it never reaches us

What we can see

  • Account emails and sign-in times
  • File sizes and upload dates
  • Task status and priority
  • Reminder times you opt into

The trade-off is real: if you lose both your password and your recovery key, no one can restore your files — not even us. Every user saves a recovery key during setup.

Read the security whitepaper Request the security packet

Pricing

Priced per firm. Clients are always free.

Annual billing: two months free.

Solo

$39 / month

  • 2 staff seats, unlimited clients
  • 50 GB encrypted storage
  • Files, chat and secure messages
Start with Solo

Practice

Most firms

$99 / month

  • 10 staff seats, unlimited clients
  • 250 GB encrypted storage
  • Your domain and logo
  • Tasks, video calls, private AI
Start with Practice

Firm

$249 / month

  • 30 staff seats, unlimited clients
  • 1 TB encrypted storage
  • US or EU hosting region
  • Priority support, security addendum
Talk to us

IT providers and MSPs: resell SealRoom under your own brand. Partner program

Questions firms ask

What if a client forgets their password?

They sign in with their recovery key. Without it, no one can recover the files — that is what zero-knowledge means. Setup walks every user through saving the key.

Where is our data hosted?

In the United States or the European Union — your choice. Either way, only encrypted data is stored.

Does it replace our practice software?

No. SealRoom sits next to your tax, practice-management or CRM tools and handles secure client intake and communication.

Do clients need to install anything?

No. Clients use a normal web browser on a computer or phone, and they never pay.

Who is behind SealRoom?

A small team with backgrounds in enterprise IT, finance and legal structuring. Full company details are in our security packet, available on request.

Founding-firm pricing: 50% off your first year.

Ten spots, price locked for three years. Set up before tax season.

Book a 15-minute demo Try the sandbox