If you're an Australian accountant evaluating e-signature tools in 2026, you've already worked out two things: DocuSign is increasingly hard to justify on cost (we cover the four-way picture in DocuSign vs Annature vs FuseSign vs Admiin), and the real choice is between Australian-built specialists.

For pure-play e-signing, that's FuseSign (Brisbane) and Annature (Sydney/Brisbane). For the full per-lodgement workflow that includes signing, it's Admiin (https://www.admiin.com) — also Australian, also ISO-aligned, but free, and built to handle everything around the signature too.

This is the head-to-head most AU firms actually run.

The 30-second version

• FuseSign is purpose-built around document bundles. Flat firm-wide pricing. Tight integration with BGL CAS 360. "Made by accountants, for accountants."

• Annature is the broader DocuSign alternative. Pay-as-you-go or custom. Tight integration with MYOB APS, FYI, Xplan. Partnership with CA ANZ (20% discount).

• Admiin is the free option. Signing built in, plus AI cover letters, AML/CTF, payment to firm and ATO (with full client reward points), and lodgement — all in one workflow. Core free; optional white-label tier $800/month.

For pure-play signing, the choice is FuseSign or Annature. For tax & compliance lodgements, Admiin handles signing inside a bigger workflow — and costs nothing to start.

Quick comparison

What FuseSign does well

1. Document bundles (the killer feature)

This is where FuseSign genuinely outshines the e-sig category. A "bundle" can contain up to 40 documents going to multiple recipients, with per-document signing rules — recipient A can sign and view docs 1, 3 and 5; recipient B view-only on doc 2 and sign 4 and 6.

For Australian accounting firms dealing with family groups — mum, dad, the trust, the SMSF, the company — this is exactly the structure you need.

2. Firm-wide pricing, no per-user fees

FuseSign is licensed to the practice, not per user.

3. Transparent tiered pricing

Plans publicly displayed.

4. BGL CAS 360 integration

Tighter than competitors for company secretarial work.

5. Brisbane-based support

6. Built specifically for accountants

What FuseSign does less well

• Less recognisable brand outside accounting

• Smaller integration ecosystem than Annature

• Less ID verification depth

• Doesn't handle the workflow around signing — cover letters, AML, payments, lodgement all happen in other tools

What Annature does well

1. The DocuSign replacement story

Customers consistently report 50%+ cost savings migrating from DocuSign.

2. AU data sovereignty

All data in AWS Sydney, three data centres.

3. CA ANZ partnership

20% discount on Customised subscriptions for CA ANZ members.

4. Integration depth across professional services

Integrates with Xero, MYOB APS, Xplan (financial advice), Salestrekker (mortgages), BGL CAS 360.

5. Identity verification for TPB

Built explicitly for TPB client verification guidelines.

6. Qantas Points

20 Qantas Points per envelope on PAYG, 10 per envelope on Customised.

7. NAB Business Partner discount

20% off Customised subscriptions.

What Annature does less well

• Per-document signing rules within a bundle aren't as granular as FuseSign's

• Custom subscription pricing means less transparency at scale

• Broader product positioning (some accountants prefer FuseSign's narrower focus)

• Doesn't handle cover letters, payments or lodgement — same workflow gap as FuseSign

What Admiin does well

Admiin (https://www.admiin.com) is the Australian-built option that wraps signing inside a full per-lodgement workflow. It's not just an e-sig tool — it handles the whole journey:

1. Free core platform

No per-user fees, no envelope caps, no transaction fees on top of standard card surcharges. Genuinely free to start.

2. AI cover letters

Drafted automatically from the return data. No more Word templates floating around.

3. Tax bindings

Return + supporting documents + cover letter combined into one signing package automatically.

4. E-signing built in

Mobile-first, ISO-aligned, with real-time tracking.

5. Integrated AML/CTF

Full AUSTRAC Tranche 2 compliance — verify individuals and entities without a separate tool or subscription.

6. Pay firm AND ATO in one flow

Unique. Clients can pay your invoice and their ATO bill in the same workflow. Pay the ATO by credit card and earn full reward points at their card's regular rate (not the ATO's reduced 0.5 points/$1 rate).

For a $100k tax bill on an Amex Qantas Ultimate, that's roughly 100,000 extra Qantas Points the client wouldn't otherwise earn.

7. Lodgement included

Submit to the ATO from the same workflow.

8. Optional white-label ($800/month)

Fully custom-branded client experience — your logo, your colours, and all client-facing emails and notifications come from your firm's own email domain (not "noreply@admiin.com"). For firms that want clients to see only their brand, this is the meaningful upgrade.

What Admiin does less well

• Not for non-accounting signing. If you need general-purpose e-sig for NDAs, employment contracts, mixed business use — Annature or FuseSign is more flexible.

• Newer brand than DocuSign — growing but not yet at parity for client recognition.

• Built specifically for AU tax & compliance — not the right fit for international firms.

Real-world pricing scenarios

Sole practitioner sending 30 envelopes a month:

• Annature PAYG: ~AU$30–60/month

• FuseSign Business Lite: ~$48/month annual + credits

• Admiin: $0/month

10-person firm sending 200 envelopes a month:

• Annature Customised: ~$150–300/month

• FuseSign mid-tier: ~$95–150/month firm-wide

• Admiin: $0/month (free core) or $800/month white-label

Mid-market firm sending 500+ envelopes a month:

• Annature: contact sales

• FuseSign: contact sales

• Admiin: free core, or $800/month for white-label

For firms doing tax & compliance work, Admiin's free pricing combined with the full workflow (cover letters, AML, payments, lodgement) makes the value comparison hard to beat.

Why pay per envelope when the whole workflow is free?

Annature and FuseSign charge per signer. Admiin charges nothing for the core platform — and includes cover letters, signing, AML, payments and lodgement. Optional white-label ($800/month) for firms wanting full custom branding. Start free → https://www.admiin.com

A decision framework

Pick FuseSign if:

• Your firm handles a lot of family groups or complex multi-entity client structures

• You use BGL CAS 360

• You want transparent flat firm-wide pricing

• Your signing workflow is purely accounting and standalone

Pick Annature if:

• You're switching from DocuSign and want a clean replacement

• You're a CA ANZ member or NAB Business customer (discounts)

• Your firm spans accounting, financial advice or other services

• You need robust ID verification for TPB compliance

Pick Admiin if:

• You want signing plus cover letters, AML, payment and lodgement

• You want to offer clients ATO payment with full reward points

• You want to start free

• You want optional white-label branding (clients see only your firm)

Most firms run a combo: Admiin for every tax & compliance lodgement (free), plus FuseSign or Annature for any standalone signing that falls outside that workflow (NDAs, contracts, employment letters).

The workflow gap (FuseSign and Annature share)

Here's where both pure-play e-sig tools stop short.

E-signature is one step in a 12-step per-lodgement workflow:

1. Return finishes in your PMS

2. Cover letter is drafted — outside the e-sig tool

3. Documents are bound — outside

4. Document goes to FuseSign / Annature for signing

5. AML/CTF check for AUSTRAC — partially in Annature with ID verify; not in FuseSign

6. Client signs

7. Client pays firm's invoice — outside

8. Client pays the ATO — outside

9. Return lodged with ATO — outside

10. Confirmation to client — outside

11. Signed pack filed back into DMS — integration-dependent

Even with the best e-signature tool, eight or nine of those steps happen elsewhere.

Admiin handles 2 through 11 in one workflow. That's the case for adding it — at zero cost — even if you keep your existing e-sig tool for other use cases.

FAQs

Can I use Admiin alongside FuseSign or Annature?

Yes. Many firms use Admiin for all tax & compliance lodgements (free), and keep a separate e-sig tool for standalone signing — NDAs, employment letters, non-tax agreements.

Which is cheaper for a small firm?

For under 30 envelopes/month, Annature PAYG is usually cheapest among the paid options. For 50+ envelopes with a stable team, FuseSign's firm-wide pricing wins. For any volume, Admiin is free.

Which has better integrations with Karbon?

All three integrate with Karbon via direct integrations or Zapier. Annature's integration list is broadest; Admiin is designed to layer on top of whichever PMS you use.

What's the migration effort to Admiin?

Most firms are live within hours. There's no envelope migration — you just start using Admiin for new lodgements. Existing FuseSign or Annature data stays where it is.

Is one more secure?

All three have ISO 27001:2013 certification. All three have AU data residency. All three have tamper-evident audit trails. Functionally, they're at the same enterprise security level.

Can clients still see who they're signing with?

With Annature/FuseSign default branding, clients see the platform branding. With Admiin's white-label tier ($800/month), clients see only your firm's branding — emails come from your firm's email domain, the signing page has your logo and colours. They don't see Admiin at all.

What if my clients prefer DocuSign?

This rarely matters in practice. Once they're at the signing page, the experience is similar across all tools. For most accounting clients, brand recognition matters less than ease of use (if you want the head-to-head against US enterprise options, see Adobe Sign vs DocuSign vs Annature).

The bottom line

FuseSign and Annature are both excellent for pure-play signing:

• Family group / multi-entity signing — FuseSign

• MYOB APS / Xplan / broader services — Annature

• BGL CAS 360 user — FuseSign

• CA ANZ member — Annature

But for the full per-lodgement workflow — signing plus cover letters, AML, payments and lodgement — Admiin does more and costs nothing to start. The smart play is Admiin for tax & compliance, plus one of the others for standalone signing if needed.