Get paid faster for consulting, legal, and professional services.

Invoice clients, collect retainers, and accept card or bank payments — all from one Harbour account built for service-based businesses.

Professional services firms — consultancies, law offices, accounting practices, agencies — bill differently than almost any other kind of business. Revenue often comes through retainers, milestone-based invoices, or hourly billing cycles rather than a single point-of-sale transaction, which means the payment problem isn't about accepting a card quickly, it's about getting invoices out consistently and collected on time. Harbour Payments' recurring billing tools automate that entire cycle: retainers go out on schedule, failed card payments retry automatically before becoming an awkward phone call, and clients get a secure portal to pay online without needing to call for a copy of an invoice. For larger invoices — a big project milestone or a corporate retainer — ACH and bank transfers offer a lower-cost alternative to card processing, which matters more as invoice size grows. Because professional services firms are often trusted with sensitive client information and payment details, our infrastructure is built to PCI-DSS standards by default, so client trust isn't something a firm has to build from scratch on top of its payment processor. This approach scales whether it's a solo consultant billing a handful of retainer clients or a multi-partner firm managing dozens of ongoing engagements — the same automated billing, secure payment collection, and unified reporting apply regardless of firm size, freeing up the administrative time that manual invoicing would otherwise consume.