You own the deadline. Your client owns the delay
Accountants lose 10–25% of their time chasing clients for signatures on powers of attorney, mandate letters, and tax documents, and when a client signs late, the missed deadline lands on your firm. 4SIGNER gets every document signed in under 2 minutes, from any phone, fully legally valid.
CERTIFIED BY
The deadline is yours. The signature
is out of your hands
Your team spends up to a quarter of its time on one frustrating task: chasing clients to sign. Powers of attorney. Mandate letters. Tax filings. Print it, post it, email it, call about it, email again.
Then tax season hits, and the slow trickle becomes a flood – dozens of clients all need to sign at once, and the bottleneck turns critical overnight. One client who sits on a document for a week can push a filing past its deadline.
And when that deadline is missed, the client isn’t the one who answers for it. You are. The firm owns the deadline risk, no matter who caused the delay.
There is a better way.
A signed contract in under 2 minutes.
No more chasing
Your client receives a signing request on their phone or computer. They open it, review it, and sign with a fully qualified electronic signature — legally equivalent to a handwritten one and valid across all 27 EU member states. You see the moment it’s done. No follow-up calls, no waiting by the post box.
No printing
No posting
No office visits
No “I’ll sign it later”
No chasing the client
No missed deadlines
Whether you run it, close the deals, or own the risk - 4SIGNER works for you
01 / 03
Firm owners & partners
You carry the deadline risk for every client the firm represents.
One late signature can mean a missed filing, a penalty, and a difficult conversation you didn’t cause. 4SIGNER removes the variable you can’t control – clients sign in minutes, you see exactly who’s done and who isn’t, and deadlines stop depending on the post or a client’s memory.
02 / 03
Accountants & tax advisors
You want to spend your time on the work, not on chasing paper.
Stop printing, posting, and following up three times for one signature. Send the document, the client signs in 2 minutes, you move on. That’s up to a quarter of your week handed back to you – most valuable exactly when tax season makes every hour count.
03 / 03
Practise & office managers
You coordinate dozens of clients signing at once when deadlines cluster.
4SIGNER lets you send signing requests in bulk, track everyone in real time, and see at a glance who still needs a nudge. No spreadsheets of who-signed-what. No surprises the day before a deadline.
What firms see after switching to 4SIGNER
25%
of advisor time freed from chasing signatures
2 min
from sending to signed contract
3,000+
organizations already trust 4SIGNER
27 EU
countries where signatures are valid
Every document your firm handles, covered
01
Powers of attorney
02
Mandate and engagement letters
03
Tax returns and filings
04
Annual financial statements
05
Tax authority representation authorizations
06
GDPR and data processing agreements
07
NDAs and confidentiality agreements
08
Audit and assurance documents
Three plans.
One honest price per document
From the very first document, you have everything you need for digital signing – simply, securely, and in compliance with eIDAS.
Free
For trying things out
€0
/ month
5 documents per month
Number of documents
5 / month
Documents per operation
2
Timestamps
0
Free certificate
Custom graphic signature
Signing history
1 month
MOST CHOSEN
Premium
For regular signing
€9.99
/ month
1 000 documents per month
€0.01 / document
Number of documents
1 000 / months
Documents per operation
100
Timestamps
25
Free certificate
Custom graphic signature
Signing history
3 months
Enterprise
For companies with individual requirements
Custom
Volume-based pricing
We will prepare a package tailored to your requirements, and you will also get support for a wide range of SaaS API solutions.
All prices in EUR, including VAT. Annual billing saves 12.4 %.
You probably have
a few questions
Is an electronic signature legally valid for powers of attorney and tax documents?
Yes. Qualified electronic signatures issued by 4SIGNER are fully legally valid under the eIDAS regulation, equivalent to a handwritten signature, and accepted in all 27 EU member states, including Slovakia and the Czech Republic.
Will the tax authority and public institutions accept it?
Yes. A qualified electronic signature has the same legal standing as a wet-ink signature and is accepted by courts, tax authorities, banks, and public bodies across the EU.
Does my client need to create an account or install anything?
No. Your client receives a link, opens it on any device, and signs. No app, no account, no friction – which matters when you’re dealing with clients of every level of tech comfort.
Can I send documents to many clients at once during tax season?
Yes. Send signing requests in bulk, track everyone in real time, and instantly see who still needs to sign, so the seasonal crunch never turns into a deadline crisis.
How is 4SIGNER different from DocuSign or Autenti?
4SIGNER provides a Qualified Electronic Signature – the highest, court-proof legal tier under eIDAS – as standard, rather than the basic e-signature most platforms default to. For documents the tax authority and courts must accept without question, that distinction matters.
This tax season, your deadlines shouldn't depend on who hasn't signed yet
Book a 20-minute demo and we’ll show you exactly how 4SIGNER works for accounting firms your size. No pressure, no sales pitch – just a practical walkthrough.