Accurate XBRL conversions for CRD IV reporting

From up-and-coming challenger banks to large-scale established institutions, our COREP, FINREP and Asset Encumbrance solutions support finance experts across Europe.

Arkk’s CRD IV reporting platform is Excel-based, so it’s easy to link to existing data and populate like any other spreadsheet. Simply upload your file to our secure online platform, and convert to XBRL at the click of a button.  Flexible and scalable, Arkk’s solution adapts to meet your changing reporting requirements.

With our roll-forward functionality, you can easily adopt new templates when they are released – without rekeying all of your old data. After uploading and converting a file, our secure portal runs a dual validation check against the EBA’s rules, giving you confidence that your return will be accepted first time.

With no installation, full compatibility with Microsoft Excel and accurate XBRL conversions, it’s no surprise that Arkk Solutions’ COREP tool is the most widely used solution in the UK.


  • Templates compatible with Microsoft Excel
  • No installation
  • Simple & secure web upload process
  • Link to existing Excel documents - no rekeying of data
  • Automated validation and consistency checks
  • Phone and email support


The Arkk Solutions CRD IV Portal allows you to produce EBA valid XBRL reports for COREP, FINREP and other reporting requirements, ready for submission to your local competent authority.

To create your reports, simply log in to the Portal and select the reporting templates you need. This can be tailored to fit your firm’s reporting profile, and downloaded as a standard Excel workbook. You can now locally populate this template with your own reportable data as you would any Excel spreadsheet.

When you’re ready to submit, upload your populated Excel template for XBRL conversion and validation. Your fully validated XBRL reports are now ready for successful submission.

For a full demo of the COREP portal, or for further information on how we can support you with your capital reporting obligations, please get in touch.

Key Features

  • Never miss an update
    Our strong relationships with the local and European regulators allow us to get first-hand insight into legislation changes and keep services up-to-date. With our Cloud solution, we can deploy changes instantly, which means you’re always working on the latest templates and never have to pay consultancy fees to update.
  • Reporting made simple
    To make validation errors simple to fix, simply click straight to the specific cell in your template and make any adjustments. Arkk consolidates all your CRD IV reporting requirements onto one Excel file, creating a streamlined process for you and your team to work on.
  • Assurance and Compliance
    With a full audit trail, approval sign-offs and a data point counter to check consistency, you can be sure that your submission follows the latest guidelines. With local regulators spot-checking for data-validity, we provide an HTML viewer to check your XBRL submission prior to submission. You can also view a version history report to see all previous instance of the templates.
  • The whole EBA filing suite
    COREP and FINREP are just two of multiple requirements which fall under CRD IV. We support the full range of EBA filing modules, including Asset Encumbrance, the HER and Capital +. With the requirements prone to change depending on your business activity, you can be sure that the reports you need are always available.
  • Changing Requirements
    Whilst CRD IV may seem like business as usual, we frequently update our offering in line with changes to the directive. Our in-house regulatory experts are constantly in contact with the regulators ensuring we’re the first to hear of any new standards. Arkk clients are ready for the FCA’s new requirements, and are preparing for the New Capital Requirements which will impact all CRD IV filers.

Talk to us about simplifying your reporting

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