The Solution for Auditors and Bookkeepers
Digital Signature Solution for Auditors and Bookkeepers
Collect signatures faster, document approvals, and keep track of client processes – all with full traceability and eIDAS compliance.

More control, less administration
Make the accounting flow streamlined and secure
When deadlines are tight, signing and approval just need to work. NextSign brings together documents, status, and traceability in one solution.
- Quick collection of signatures
- Get approvals quickly – from mobile, tablet, or desktop without friction.
- Audit trail for documentation
- All events are automatically logged, so you can document who signed and when.
- Secure sharing and access control
- Control who has access to which documents, and avoid errors and incorrect distribution.
- Templates and reuse
- Standardize engagement letters, declarations, and consents – ready for reuse.

New format from 2025
iXBRL signatures for annual reports
Financial statements with a balance sheet date of 1 January 2025 or later must be filed with the Danish Business Authority (Erhvervsstyrelsen) in Inline XBRL (iXBRL). With NextSign you collect legally valid signatures directly on the iXBRL file itself – the recognised accounting document that is actually filed – not just on a PDF copy.
- Sign the iXBRL file itself.
- Management and the board sign the machine-readable report that gets filed – not a separate document.
- Cryptographic sealing.
- Every signed iXBRL file is sealed with a XAdES signature so authenticity and unchanged content can be proven.
- MitID and full traceability.
- Signers are identified with MitID, and every event is time-stamped into a complete audit trail.
- Ready for Erhvervsstyrelsen.
- The file stays both human-readable (like a PDF) and machine-readable, so it can be filed with no extra steps.

iXBRL signatures
Frequently asked questions about iXBRL signing
Yes. An iXBRL annual report that is signed digitally and sealed with a qualified signature is a valid, documentable accounting document. NextSign seals the file with a XAdES signature and a full audit trail, so its authenticity can always be verified.
iXBRL (Inline XBRL) is a format where the annual report is both human-readable (shown like a PDF) and machine-readable. Financial statements with a balance sheet date of 1 January 2025 or later can only be filed with the Danish Business Authority in iXBRL – the XBRL and PDF formats are being phased out.
Upload the iXBRL file to NextSign, add the people who need to sign, and send. Each signer confirms with MitID, after which NextSign applies a legally valid signature and seals the file – without altering the reported figures.
Yes. The signature is placed so the iXBRL file remains well-formed and can be filed with Erhvervsstyrelsen. Both the visual report and the machine-readable XBRL data are unchanged and protected against later edits.
Typical use cases
What do auditors and accountants use NextSign for?
Automate signing across client processes, saving time and avoiding bottlenecks.
Financial Statements & Annual Reports
Get reports approved quickly and with full documentation.
- Annual reports and audit records
- Management declarations
- Board approvals
Engagement Letters
Quickly start with new clients and document terms.
- Assignment agreements
- Price and scope agreements
- Standard terms
Declarations & Consents
Collect declarations and consents in one streamlined process.
- Consent declarations
- Declarations to authorities
- KYC/AML documentation
Payroll, HR & Internal Approvals
When internal signatures are needed, it must be quick.
- Employee agreements
- Confidentiality declarations
- Internal approvals
Client Approvals
Collect confirmations on figures and assumptions.
- Approval of drafts
- Data confirmation
- Signing at year-end
Mass Processes
Send to many clients at once without manual handling.
- Mass distribution of declarations
- Standard documents to multiple clients
- Batch signing with status overview
+ All documents that require traceable approval
NextSign provides overview, documentation, and faster process – regardless of document type.
That's why accounting professionals choose NextSign
More speed, fewer errors, and better compliance
Created for teams working with deadlines, clients, and documentation – every day.
Documentation ready for audit
All events are automatically logged and can be shared with clients or authorities.
- Timestamped logs
- Document validation
- Easy access to history
Lower administrative work
Automate follow-ups and get a status on all clients at a glance.
- Automatic reminders
- Status per client
- Less manual follow-up
Professional client experience
Sign without friction – even when the client is on mobile.
- MitID in just a few clicks
- No login required
- Real-time documentation
Top-notch security
GDPR and eIDAS are built-in, so you can focus on accounting.
- Access control
- Secure storage
- Compliance-ready
Our Values
- Security
- At NextSign, security is a top priority in our solutions. We ensure compliance with local and international regulations to protect all digital transactions.
- Customer-Oriented
- We put our customers at the center, as we know that satisfied customers lead to more customers. Customers are the foundation of our business, and we do everything we can to meet their needs.
- Innovation
- We constantly innovate to create new and more effective solutions for digital signatures that meet the growing needs of businesses.
- Flexibility
- We work flexibly, and everything we create is designed to adapt to the individual company. This ensures that each customer can configure their NextSign to precisely meet their needs.
- Transparency
- We offer a completely transparent pricing structure where customers only pay for their actual usage. We believe in clear and honest pricing without hidden costs.
- Integrity
- We act with integrity and professionalism in everything we do. Integrity is at the core of our business, and we always strive to deliver high-quality solutions with respect for our customers and partners.
Ready to
streamline your accounting flow?
Contact Agnes for a walkthrough of how NextSign can optimize your processes.
