recently switched to Go Systems from UTax. GSTax considers it beneath them to offer esigning.
(kba = knowledge based authentication)
Not that UT esigings was so smooth, but it worked.
For GST I've been using CPAperless SignatureFlow which piggybacks off of Adobe/EchoSign cloud.
Easy enough to use (though it doesn't remember contacts and can's save templates so you have to drag and drop signature fields to the same forms every time)
But maybe 1 out of 10 clients have technical problems with it. CPAperless suggests telling clients to clear caches, history. change browsers, check blocking etc. all those things you don't ask a client to do just to sign something when they already suspect it's just to make it easier for the tax preparer.
CpaPaperless knows the issues and expects to have their own app in unknown future.
If you're not a Lacerte user, DocuSign only provides kba esigning to "enterprise" large accounts. DocuSign allows templates which I assume eliminate repetitive signature field placing?
HelloSign doesn't do kba but looks nifty.
The ShareFile kba product is both pricey and mediocre and confusing to both client and accountant.
There's a co out of Tenn, SignX which mentions they have a product for tax preparers but no info. Await info.
Funny thing is that Go Systems Tax has an efiling instruction option telling clients to email their signed efile authorization to your email address.
The IRS rules on esigning seem to be "honored in the breach" with many practitioners deciding it's ridiculous to require wet signatures or even kba when you are sure of the client's email address and access or you send and receive via secure portal.