TKC's 'e-TAX Office Tax' Surpasses 200 Client Companies Within One Month of Launch, Centered on Listed Firms
TKC Corporation announced that its 'e-TAX Office Tax' cloud system, launched on March 25, 2026, has already been adopted by over 200 companies, primarily large listed enterprises, within just one month. The system is highly praised for solving manual labor issues in office tax filing and payment.
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- 📰 Published: April 27, 2026 at 18:00
- 🔍 Collected: April 27, 2026 at 09:31
- 🤖 AI Analyzed: April 27, 2026 at 14:11 (4h 40m after Collected)
TKC Corporation (Headquarters: Utsunomiya, Tochigi; President: Masanori Iizuka) announced that the number of companies adopting its 'e-TAX Office Tax' electronic filing system, which began service on March 25, 2026, has surpassed 200 within one month of its release, mainly among listed companies. e-TAX Office Tax is a service that completes everything from office tax return preparation to electronic filing and electronic payment on a single cloud system.
■ Background of Surpassing 200 Companies
Office tax is a local tax levied on business owners who have business locations with a floor area of more than 1,000 square meters or more than 100 employees in designated cities and Tokyo's 23 wards. According to the Ministry of Internal Affairs and Communications, the electronic filing rate for office tax in FY2024 remained at only 43.9%. While corporate inhabitant tax and corporate enterprise tax reached 87.6% due to mandatory electronic filing for large corporations and standardized filing formats, office tax is outside the scope of mandatory filing, and electronic filing has not progressed due to the following issues:
1. Filing formats differ by municipality, hindering systemization: Filing formats for office tax are determined by each local government, and standardization has not progressed. It was difficult to develop general-purpose systems, and many companies were forced to manually prepare tax returns using Excel or spreadsheets.
2. Manual input to eLTAX was required even after creating returns: Although the eLTAX electronic system for local taxes supports office tax, filing data had to be entered manually one by one. For companies with business locations in multiple municipalities, the burden of input work was significant, and moving to electronic filing did not reduce the workload.
3. Separate procedures were required for tax payment even after electronic filing: Electronic filing and electronic payment were not connected as a series of operations. Even if filing was done electronically, payment had to be processed separately through windows or bank transfers. Consequently, even after digitizing the workflow, labor-intensive steps remained, making it difficult for companies to find motivation for digitalization.
e-TAX Office Tax addressed these three challenges by connecting everything from reading business site data to return preparation, electronic filing, and electronic payment on a single system, achieving a seamless workflow. This has gathered support from both medium/large companies and accounting firms, leading to adoption by 200 companies in just one month.
■ Voice of Client Companies
'Relieved from the fear of making mistakes' (Construction Industry): 'Office tax varied by municipality, and every year we had to handle spreadsheet corrections, paper filings, and window payments. With e-TAX Office Tax, we can now complete the entire process from data transfer to electronic filing and payment in a streamlined manner.'
'Resolved the mismatch of e-filing not being easy' (Restaurant Industry): 'Entering data into eLTAX for multiple municipalities one by one was an exhausting task requiring high concentration. I was surprised that the work could be completed with batch reading and error checks. I can now focus on judgment tasks even during busy periods.'
'Improved processes previously given up as inevitable' (Manufacturing Industry): 'The entire filing process, previously handled with spreadsheets and paper, has been organized, and I feel the workflow has changed to focus on confirmation and approval.'
■ About e-TAX Office Tax
e-TAX Office Tax is a cloud system that provides end-to-end support from office tax return preparation to electronic filing and payment. Conventionally, managing business site data, creating returns, inputting into eLTAX, and payment procedures were performed in separate stages, with manual work occurring at each stage. e-TAX Office Tax connects these stages on a single system to standardize and streamline the entire business process.
Main features include:
- Batch reading of business site data from dedicated templates to automatically create tax returns. The system absorbs format differences between municipalities.
- Created filing data can be executed directly for electronic filing and payment, eliminating manual entry into eLTAX.
- Integrated management of multiple locations on the cloud.
■ Background of Surpassing 200 Companies
Office tax is a local tax levied on business owners who have business locations with a floor area of more than 1,000 square meters or more than 100 employees in designated cities and Tokyo's 23 wards. According to the Ministry of Internal Affairs and Communications, the electronic filing rate for office tax in FY2024 remained at only 43.9%. While corporate inhabitant tax and corporate enterprise tax reached 87.6% due to mandatory electronic filing for large corporations and standardized filing formats, office tax is outside the scope of mandatory filing, and electronic filing has not progressed due to the following issues:
1. Filing formats differ by municipality, hindering systemization: Filing formats for office tax are determined by each local government, and standardization has not progressed. It was difficult to develop general-purpose systems, and many companies were forced to manually prepare tax returns using Excel or spreadsheets.
2. Manual input to eLTAX was required even after creating returns: Although the eLTAX electronic system for local taxes supports office tax, filing data had to be entered manually one by one. For companies with business locations in multiple municipalities, the burden of input work was significant, and moving to electronic filing did not reduce the workload.
3. Separate procedures were required for tax payment even after electronic filing: Electronic filing and electronic payment were not connected as a series of operations. Even if filing was done electronically, payment had to be processed separately through windows or bank transfers. Consequently, even after digitizing the workflow, labor-intensive steps remained, making it difficult for companies to find motivation for digitalization.
e-TAX Office Tax addressed these three challenges by connecting everything from reading business site data to return preparation, electronic filing, and electronic payment on a single system, achieving a seamless workflow. This has gathered support from both medium/large companies and accounting firms, leading to adoption by 200 companies in just one month.
■ Voice of Client Companies
'Relieved from the fear of making mistakes' (Construction Industry): 'Office tax varied by municipality, and every year we had to handle spreadsheet corrections, paper filings, and window payments. With e-TAX Office Tax, we can now complete the entire process from data transfer to electronic filing and payment in a streamlined manner.'
'Resolved the mismatch of e-filing not being easy' (Restaurant Industry): 'Entering data into eLTAX for multiple municipalities one by one was an exhausting task requiring high concentration. I was surprised that the work could be completed with batch reading and error checks. I can now focus on judgment tasks even during busy periods.'
'Improved processes previously given up as inevitable' (Manufacturing Industry): 'The entire filing process, previously handled with spreadsheets and paper, has been organized, and I feel the workflow has changed to focus on confirmation and approval.'
■ About e-TAX Office Tax
e-TAX Office Tax is a cloud system that provides end-to-end support from office tax return preparation to electronic filing and payment. Conventionally, managing business site data, creating returns, inputting into eLTAX, and payment procedures were performed in separate stages, with manual work occurring at each stage. e-TAX Office Tax connects these stages on a single system to standardize and streamline the entire business process.
Main features include:
- Batch reading of business site data from dedicated templates to automatically create tax returns. The system absorbs format differences between municipalities.
- Created filing data can be executed directly for electronic filing and payment, eliminating manual entry into eLTAX.
- Integrated management of multiple locations on the cloud.