Seamlss

Seamlss is designed specifically for Australian accounting, tax, and bookkeeping firms. It brings client onboarding, engagement letter delivery, digital signature collection, and identity verification into a single flow so firms can take on new clients without the usual paperwork bottleneck.

The tool works with Xero Practice Manager as a connected app, pulling client data and syncing job creation automatically. Engagement letter templates are customisable, and clients sign directly in the browser with no portal login required. Identity verification runs through Seamlss source documents or Stripe Identity with Document Verification Service (DVS) access; each DVS check is billed at a flat per-check rate on top of the subscription.

Seamlss also handles ATO Agent Linking, the Australian Tax Office process that accounting firms must complete when taking authority over a client's tax account. Re-engagement tools let firms bulk-send updated letters or reverification requests to existing clients. Ethical clearance requests to the previous accountant are also automated.

Pricing is in Australian dollars. All plans include unlimited clients and users, which makes per-head costs predictable as the firm grows. A 14-day unlimited free trial is available with no credit card required. Seamlss is a Xero Connected App and an AWS-hosted platform with bank-level encryption and two-factor authentication.

Note: Seamlss is built around Australian regulatory requirements (ATO, DVS). It is not suited to firms outside Australia.