- Home
- Disclosure Management Software
- CoreFiling Seahorse
CoreFiling Seahorse
Oxford, United Kingdom
What it is
CoreFiling Seahorse is browser-based SaaS for preparing and converting XBRL, iXBRL, and XML regulatory filings. It converts annual reports from PDF, Word, Excel, or InDesign into XHTML while retaining their visual design; InDesign users can also import EPUB. Completed financial reports can be prepared as Inline XBRL, including ESEF and UKSEF reports and UK HMRC tax returns. Machine-learning suggestions identify tags for report lines and provide confidence scores for review. Seahorse can tag financial tables in one pass and supports block and nested-block tagging for notes. It checks filings against ESMA conformance rules and the ESEF filing manual, displaying errors and warnings during work. A roll-over feature brings tagging decisions from prior reports into later years. Other uses include Country-by-Country Reporting templates and validation, plus CSV and specially formatted Excel inputs for some prudential, regulatory, and statistical reports. The software supports API access and audit trails. Pricing is available on request. CoreFiling says licences, onboarding, and support come through certified providers in Europe and the UK.
For and against
For
- Converts common office documents into XHTML
- Provides machine-learning tag suggestions with confidence scores
- Checks filings against ESMA and ESEF requirements
- Carries prior-year tagging decisions forward
- Browser-based cloud access requires no installation
Against
- Pricing is available on request
- Tagging requires accounting knowledge for review
- The first year can take the most work
The verdict
Seahorse combines report conversion, tagging, and validation in a browser-based service for regulatory filings. Teams should account for review expertise and potentially heavier setup work in the first year.
Who it suits
It is intended for in-house teams and tagging partners preparing ESEF reports. Reviewers should have accounting knowledge, and the first year may require more work, particularly when creating taxonomy extensions.
On the record
- Automated tagging
- Its automated tag-selection engine uses machine learning informed by selections from thousands of previous filings.corefiling.com · read 4 Oct 2026
- Browser access
- Seahorse runs as SaaS in the browser and requires no installation, according to CoreFiling’s ESEF software page.corefiling.com · read 4 Oct 2026
- Certification
- Seahorse holds XBRL International’s Report Creation Software certification.corefiling.com · read 4 Oct 2026
- Country-by-country reporting
- It provides Excel templates for CbCR and converts and validates the resulting reports against applicable business rules.corefiling.com · read 4 Oct 2026
- Data inputs
- For some prudential, regulatory, and statistical reporting, it accepts CSV and specially formatted Excel sheets that can be combined with templates.corefiling.com · read 4 Oct 2026
- ESG reporting
- CoreFiling says it works with standards setters and regulators to keep Seahorse ready for ESG reporting requirements.corefiling.com · read 4 Oct 2026
- Financial reports
- It converts completed annual financial reports and accounts into Inline XBRL, including ESEF and UKSEF reports and UK HMRC tax returns.corefiling.com · read 4 Oct 2026
- Input formats
- It accepts PDF, Word, Excel and InDesign documents, with EPUB import available for InDesign users.corefiling.com · read 4 Oct 2026
- Integration
- CoreFiling describes document integration in which a vendor sends Word, Excel, PDF, or InDesign files for Seahorse conversion, tagging, and validation; the broader True North platform exposes tagging and validation through APIs.corefiling.com · read 4 Oct 2026
- Intended users
- CoreFiling describes Seahorse as serving in-house teams and tagging partners preparing ESEF reports.corefiling.com · read 4 Oct 2026
- Notable consideration
- CoreFiling says tagging requires accounting knowledge for review and that the first year can take the most work, especially when creating taxonomy extensions.corefiling.com · read 4 Oct 2026
- Other reporting
- For Country-by-Country Reporting, it provides Excel templates and converts and validates the resulting reports.corefiling.com · read 4 Oct 2026
- Prior-year rollover
- Its roll-over feature copies a company’s prior-year tagging decisions to reduce work in later reporting years.corefiling.com · read 4 Oct 2026
- Purpose
- Seahorse is SaaS software for creating and converting XBRL, iXBRL, and XML regulatory filings.corefiling.com · read 4 Oct 2026
- Report conversion
- It converts annual reports from PDF, Word, Excel, or InDesign into XHTML while preserving their visual design.corefiling.com · read 4 Oct 2026
- Roll-over
- The roll-over feature carries prior-year tagging decisions into subsequent reports.corefiling.com · read 4 Oct 2026
- Security
- CoreFiling states that it holds ISO 27001 certification for information security.corefiling.com · read 4 Oct 2026
- Support and access
- CoreFiling says customers obtain Seahorse licences, onboarding, and support through certified providers in Europe and the UK.corefiling.com · read 4 Oct 2026
