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KSeF audit and post-implementation support

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KSeF audit and bridging solution

KSeF is one of the biggest changes in the area of VAT billing and invoicing processes in recent years. The KSeF audit at Aider Polska (MDDP Outsourcing) is aimed at companies that have already been subjected to the KSeF obligation, but still face errors, incomplete integration or operational problems in practice.We help you assess whether the KSeF model you have implemented is working properly, identify real risks, and put your processes in order so that KSeF functions stably, securely and without disruption to the daily work of your accounting and sales teams.
If you need a bridging solution "for now" then we offer a turnkey workflow system that ensures continuity from day one. Our solution automatically retrieves invoices from KSeF and manages their approval - stability we have already confirmed on a sample of 500,000 processed invoices. We provide operational peace of mind and invoicing without interruption, even if the target processes are still under construction.
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What does a KSeF audit consist of?


A KSeF audit is a comprehensive analysis of invoicing processes, workflow and IT systems for compliance with the requirements of the National e-Invoicing System and their practical application in the organization.


KSeF audit objectives:


  • verification that current processes meet KSeF requirements and work correctly in practice,
  • To identify gaps, irregularities and fiscal and operational risks,
  • Preparation of specific recommendations for organizational and technological changes,
  • support in the stabilization and secure operation of e-invoicing.

Why is a KSeF audit crucial after implementation?

An improperly configured or underdeveloped KSeF process after implementation can lead to:


  • errors in the issuance and receipt of invoices in KSeF,
  • inconsistencies between KSeF and VAT settlements,
  • delays in sales and cash flow,
  • increased risk of adjustments and questions from tax authorities,
  • operational problems in the daily work of accounting and sales departments.

A KSeF audit allows you to minimize these risks and organize the operation of the system in a controlled manner, without disrupting the company's operations.

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When is it worth performing a KSeF audit?


A KSeF audit is especially recommended when:


  • the company uses several invoicing or ERP systems,
  • foreign invoices, adjustments, advances or re-invoices are issued,
  • accounting processes are partly manual,
  • implementation of a new financial and accounting system is planned,
  • the organization operates in a capital group structure.

Scope of KSeF audit at MDDP Outsourcing

Ongoing KSeF support and process stabilization

KSeF isn't just about system integration - it's about efficient and secure document workflow in an organization's daily operations.
At Aider Polska (MDDP Outsourcing), we offer a ready-made, scalable solution to support invoice handling in KSeF, which:
  • automatically retrieves invoices from KSeF,
  • distributes documents to the right people and teams,
  • supports approval and control paths,
  • has been tested on a volume of more than 500,000 invoices.

For companies that have not completed a full KSeF implementation or need an interim solution ("plan B"), we provide process stabilization and operational continuity - without the risk of downtime and organizational chaos.

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KSeF audit + accounting outsourcing - a comprehensive approach


At Aider Polska (MDDP Outsourcing), we combine accounting, tax and technology competencies. As a result, the KSeF audit is not just a compliance checklist, but real support in ordering and stabilizing invoicing processes.
We cooperate with tax advisors, which ensures full tax security and consistency of recommendations.

What do you gain from a KSeF audit after implementation?

  • verification that the implemented KSeF model is working properly in practice,
  • identification of real fiscal and operational risks,
  • specific recommendations for process improvements and corrections,
  • support of accounting and tax experts,
  • stable and secure operation of e-invoicing,
  • reducing the risk of downtime, errors and emergency adjustments.
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Frequently Asked Questions (FAQ)