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I need support from an experienced accountant who knows the Polish KSeF e-invoicing system inside-out. My business issues both domestic and international invoices from our Polish entity, yet we currently have no accounting software in place. I therefore rely on you to design a full-fledged, KSeF-ready workflow from scratch, create the necessary invoice template, and ensure every document—whether it is addressed to a local customer or an overseas client—passes KSeF validation without a hitch. Here is what I expect: • A reusable template that meets all KSeF structural and XML requirements while remaining easy to read for clients. • Clear guidance (or short training notes) on how I can generate, upload, and track those invoices going forward, even if I stay with a lightweight toolset such as Excel plus the KSeF web portal. • Correct handling of VAT, currency conversion, language requirements, and any cross-border specifics so international invoices are accepted both by Polish authorities and the recipient’s jurisdiction. To make collaboration smooth, please share examples of earlier KSeF-compliant invoices you produced and outline the steps you will take to get us live quickly.
Project ID: 40601799
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Active 6 days ago
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8 freelancers are bidding on average €232 EUR for this job

Hello sir, I am a professional invoices expert and can do your task perfectly because I have done lots of similar tasks and also I am in top 1% here so just text me so I can help you out with your task perfectly Kind regards
€140 EUR in 1 day
6.2
6.2

Hi there, We can help design a KSeF-ready invoicing workflow that works cleanly from a lightweight setup such as Excel and the KSeF portal. We will focus on the invoice template structure, XML and validation considerations, and the VAT/currency handling needed for both domestic and international invoices. One point to confirm is the exact mix of cross-border transactions, as that affects the field logic and review steps. Our initial assumption is that you need a practical operating pack: template, checklist, and short guidance notes for issuing and tracking invoices reliably. We will keep the process clear, auditable, and aligned to your current toolset. The platform bid covers an initial phase focused on Discovery and design of a KSeF-ready invoice workflow: requirements mapping, field-by-field invoice template structure, VAT/currency handling rules, validation checklist, and short operating notes for issuing and trackin; wider implementation would be separately scoped on Freelancer. Best Regards, 8veer
€900 EUR in 7 days
6.0
6.0

Hello, I can help design a full KSeF-compliant invoicing workflow tailored for your Polish entity, ensuring both domestic and international invoices meet all XML and VAT requirements. I'll create a reusable invoice template that is clear for clients and fully validated by KSeF. Alongside, I will provide simple guidance on generating, uploading, and tracking invoices using Excel and the KSeF portal. My approach will cover VAT handling, currency conversion, and language needs to ensure compliance across borders. The goal is a smooth, reliable process that fits your lightweight toolset and gets you live quickly. Do you have any existing invoice data or formats to start from? Best regards, Waqas & GoDesign Team
€30 EUR in 3 days
5.7
5.7

Hello, I can help you build a complete **KSeF-compliant invoicing workflow** from scratch, including reusable invoice templates, KSeF-ready XML structure, VAT and international invoicing rules, and clear step-by-step guidance for generating, uploading, and tracking invoices through the KSeF portal. Once I understand your workflow, I'll provide the best approach, timeline, and fixed cost.
€155 EUR in 2 days
4.4
4.4

I understand you need a robust KSeF-compliant invoicing workflow, similar to how I've helped businesses integrate new tax regulations by establishing automated data flows and standardized document generation. My expertise lies in translating complex compliance requirements into practical, software-agnostic solutions. My approach will involve designing a data-driven workflow that captures all necessary invoice details at the point of creation. This will include defining mandatory fields for KSeF, mapping them to your business processes, and developing a structured data format (likely JSON or XML) that can be directly consumed by KSeF. I will then create a dynamic invoice template that dynamically populates this data, ensuring all structural and XML requirements are met for both domestic and international B2B transactions. The process will be designed for scalability and minimal manual intervention. Given your current lack of accounting software, have you considered the potential benefits of a simple, cloud-based invoicing tool that could streamline data capture and directly integrate with the KSeF submission process, rather than just focusing on the template itself? I'm happy to discuss this further and explore how we can build a truly efficient and compliant system for your business.
€250 EUR in 21 days
2.6
2.6

Payment integration must work correctly for success, failure, pending, refund, and duplicate events. I can implement this end-to-end for Poland KSeF Invoice Compliance: checkout, order creation, verified webhooks, transaction records, invoices, subscriptions, and admin tracking. I work with Stripe, PayPal, Cashfree, Razorpay, UPI flows, Laravel/PHP, and APIs. Share the gateway, country, and current order flow so I can design it correctly. Profile: https://www.freelancer.in/u/heenafullstacken Heena A Plus IT House
€90 EUR in 3 days
0.0
0.0

IF YOU'RE NOT HAPPY, YOU DON'T PAY. I recently completed a project where I designed a KSeF-compliant invoicing system for a client, resulting in 100% validation success for all their invoices. I understand you need a robust KSeF-ready workflow from scratch that includes a reusable invoice template and guidance on generating and tracking invoices. I will ensure the template meets all structural and XML requirements while remaining user-friendly. My approach will cover VAT handling, currency conversion, and compliance with both local and international regulations, making your invoicing seamless and efficient. I focus on good planning, clean and maintainable code, clear communication, on-time delivery, and reliable long-term solutions. I am confident that my expertise will help you meet your invoicing needs efficiently. If this aligns with your project, feel free to reach out to discuss scope and pricing. WORST CASE SCENARIO YOU WALK AWAY WITH A FREE CONSULTATION.
€150 EUR in 7 days
0.0
0.0

As an experienced accountant with a comprehensive understanding of the Polish KSeF e-invoicing system, I am confident in my ability to meet and exceed the requirements of your project. Throughout my career, I have developed a deep knowledge of financial regulations, ensuring that businesses can operate seamlessly while remaining compliant with local laws and obligations like VAT, currency conversion, language requirements. I have played a key role in implementing accounting systems from scratch, including designing and configuring invoice templates, managing complex data, and handling cross-border invoicing. One major advantage I bring to the table is my flexibility in using both lightweight tools like Excel along with web portals such as KSeF to automate the workflow process. I also emphasize knowledge transfer by providing clear training or guidance on the generated invoice's uploading and tracking methodologies. Finally, to ensure a smooth collaboration, I will provide you with samples of past KSeF-compliant invoices I have produced. These hard numbers speak louder than words about my capability to handle your project effectively and efficiently. Furthermore, with proven expertise in project management and financial analysis, I can guarantee not just compliance but also strategic insight that can drive your business towards sustainable financial success. Choose me for peace of mind knowing that your invoicing processes are taken care of by an expert!
€140 EUR in 7 days
0.0
0.0

Indore, India
Member since Jul 24, 2026
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