Secure client portal

Secure client portal software that protects every document your clients share

Your clients share tax returns, bank statements, contracts, and financial records. They expect those documents to be encrypted, access-controlled, and visible only to the right people. Portico is a client portal built with that expectation as the default.

The security checklist every portal buyer should use

Most "secure portal" pages list buzzwords. This checklist explains what each security layer actually means and whether it is table stakes or a real differentiator.
Security layerWhat it meansTable stakes or differentiatorPortico
Encryption in transit (TLS 1.2+)Protects data while it moves between the browser and serverTable stakes — every reputable SaaS tool has thisTLS 1.2+ on all connections
Encryption at rest (AES-256)Protects stored files if someone breaches the serverTable stakesAES-256 through AWS S3
Per-client data isolationClient A cannot see Client B's documents, even if they share a portalDifferentiator — many tools use shared folders or link-based accessDatabase scoped per team, per-client isolation
Access controls (RBAC)Team members see only what they need. Clients see only their own onboarding.DifferentiatorRole-based access for team, magic-link isolation for clients
Audit trailTimestamped log of every action — who viewed, uploaded, signed, or approvedDifferentiatorSHA-256 hash-chained, tamper-proof, exportable
Authentication without passwordsNo passwords for clients to leak, reuse, or forgetDifferentiatorMagic link (single-use, expires after use)
GDPR complianceConsent collection, data export, right to erasure, retention policiesRequired for EU clientsBuilt in: consent, export, erasure, configurable retention
SOC 2 Type IIIndependent third-party audit of security controls over 6 to 12 monthsGold standard for SaaS vendorsPlanned (runs on SOC 2-certified AWS infrastructure)
HIPAA complianceRequired only if you handle protected health information (PHI)Only needed for healthcare-adjacent businessesNot supported

How portal tools compare on security

Security varies widely across client portal tools. This comparison covers the features that matter for protecting sensitive documents.
FeaturePorticoContent SnareClustdocMoxoSuiteDashHoneyBookGoogle Drive
Encryption (transit and rest)
Passwordless or 2FAMagic links2FA2FA2FA2FA2FAGoogle 2FA
Per-client isolationLimited
Audit trailSHA-256 hash-chainedActivity log7-year retentionBasicAdmin console only
GDPR toolsLimitedLimitedGoogle DPA
SOC 2 or ISO 27001PlannedSOC 2ISO 27001SOC 2None claimedNone claimedSOC 2 (Google)
HIPAAHigher tiersBAA available
Starting priceFree$35/mo$190/moFree (2 flows)$19/mo$19/moFree (15 GB)

Who needs a secure client portal

Any service business that collects sensitive documents from clients needs encryption, access controls, and an audit trail.

Accountants and bookkeepers

Tax returns, W-2s, bank statements, and EINs contain sensitive financial data with regulatory expectations. A misconfigured shared folder can expose one client's financials to another.

Tax returns, W-2s, 1099s, bank statements, EINs

Law firms and legal professionals

Contracts, case documents, and privileged communications require strict access controls. Attorney-client privilege makes per-client isolation a professional obligation, not a preference.

Engagement letters, case files, contracts, privileged communications

Consultants and agencies

Client financials, strategic documents, and competitive data demand confidentiality. Clients sharing sensitive business information expect it to be visible only to the people working on their account.

Financial reports, strategic plans, competitive analyses, NDAs

Any business collecting personal information

Names, addresses, Social Security numbers, and payment details fall under GDPR and other data protection regulations. An encrypted client portal with access logging is the minimum standard.

Government IDs, SSNs, bank details, payment information

See how Portico works for accountants, law firms, and consultants. Or explore the client portal use case.

How a four-person bookkeeping firm evaluates portal security

A four-person bookkeeping firm handles tax documents for 30 clients. They collect W-2s, 1099s, bank statements, and EINs every tax season. Their current setup: Google Drive shared folders for documents, DocuSign for engagement letters, and email for everything else.

Last year, a client's folder was accidentally shared with another client through a misconfigured link. The firm had no audit trail to determine what was accessed or for how long. The incident was minor, but the liability exposure was not.

The firm needs per-client isolation so one client cannot see another's documents. They need access logging to prove who viewed what and when. They need encryption at rest and in transit as a baseline. Three of their clients are EU-based, so GDPR compliance tools are required. They do not need HIPAA since they do not handle medical records. SOC 2 certification is preferred but not required — running on SOC 2-certified infrastructure is acceptable.

Using the security checklist above, they can evaluate any portal tool in 15 minutes. The criteria that matter most for their practice: per-client isolation, audit trails, and GDPR tools. Encryption is table stakes. HIPAA is irrelevant. The checklist turns a vague security conversation into a concrete comparison.

Related: How to collect documents from clients and Best client portal software compared.

How Portico handles security

Every layer in the checklist above maps to a specific feature in Portico. Full technical details are on the security page.

Encryption at rest

Every file, form response, and signature is encrypted before it touches disk. Your clients' tax documents, contracts, and personal data are unreadable without the decryption key.

Encrypted in transit

All data moving between your clients' browsers and Portico is encrypted. Every form submission, file upload, and API call is protected in transit — no exceptions.

Tamper-proof audit trail

Every action — form submission, file upload, signature, approval, status change — is logged with a timestamp and cryptographically linked to the previous entry using SHA-256 hashing. If anyone modifies or deletes a record, the chain breaks and the tampering is immediately detectable. Exportable as CSV.

Role-based access control

Team owners control who can view, edit, or manage onboardings. Invite team members with scoped permissions — no one gets access they do not need.

Secure file uploads

Every uploaded file is checked for type and size before it's stored. Files are validated on our servers, not in the browser, so restrictions cannot be bypassed.

Magic-link authentication

Clients access onboardings via single-use magic links — no passwords to leak, no accounts to breach. Each link works once and expires after use.

Frequently Asked Questions

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