#InvestBLK · Payment Center

A trusted home for payments in and out of #InvestBLK.

All options are third-party, industry-standard payment vehicles with high security. Two private doorways below — one for the clients we serve and one for the vendors and sub-consultants who help bring the work to life.

For Clients

Client Payment Portal

Thank you for trusting #InvestBLK. Pay an invoice, settle a retainer, or request a formal invoice.

Requires client access codeEnter

For Vendors & Sub-consultants

Vendor Payment Portal

Thank you for partnering with #InvestBLK. Submit an invoice, choose how you'd like to be paid, and (for jobs over $600) attach your W-9.

Requires vendor access codeEnter

Encrypted in transit

All form submissions move over TLS to a private database with row-level security.

No card data stored

Card payments run on Square's PCI-DSS Level 1 infrastructure. We never see your card number.

Code-protected access

Each portal is gated by a unique access code shared only with active clients and vendors.