Kailing Technology provides an efficient and convenient "fully digitalized e-invoice Leqi connection API" service for enterprises to integrate, easily achieving Leqi Direct Connection

Against the backdrop of the State Taxation Administration's vigorous effort to advance tax digital transformation, the implementation of the "Leqi Direct Connection" policy has brought major changes to enterprise business-finance-tax management. Kailing Technology actively responds to policy direction and has launched a fully digitalized e-invoice Leqi integration API service, helping enterprises quickly, efficiently, and compliantly connect to the Leqi platform and achieve automation and intelligence across the full invoice management process.

I. Policy Dividends Released, Leqi Direct Connection Opens a New Paradigm for Business-Finance-Tax Management

Leqi Direct Connection is a tax-enterprise system direct connection channel provided by the State Taxation Administration for qualifying enterprises. Through open standard interfaces, it allows enterprises' own information systems to connect directly with tax systems, achieving full-process automation of tax-related services such as the issuance, delivery, and verification of fully digitalized e-invoices. This policy not only greatly improves enterprise tax handling efficiency, but also, through embedded rules and data interoperability, safeguards the authenticity and compliance of invoice data from the source.

In 2025, tax authorities in many places further lowered the entry threshold for Leqi Direct Connection. For example, Beijing adjusted the cumulative invoice issuance and receipt volume requirement from 50,000 to 10,000, and lowered the invoicing amount threshold from 500 million yuan to 100 million yuan. This adjustment allows more enterprises to enjoy the convenience of Leqi Direct Connection and accelerate their digital transformation of business-finance-tax.

II. Enterprise self-development vs Kailing Technology: cost-benefit comparison

If an enterprise chooses to independently develop integration with the Leqi platform, it will face huge time and cost investments. Taking output VAT products as an example, enterprises need to invest substantial manpower and time in interface development, invoicing control services, basic capabilities, layout file generation, and operation interface development. In addition, enterprises must bear subsequent upgrade and operations and maintenance costs, which are enormous challenges to their resources and capabilities.

In comparison, by choosing Kailing Technology's fully digitalized e-invoice Leqi integration API service, enterprises can significantly save costs and time. Kailing Technology delivers the full source code and completes the knowledge transfer for its use, ensuring enterprises can be autonomous and controllable after integration without violating relevant regulations of the State Taxation Administration. At the same time, Kailing Technology's products are highly mature and fit business scenarios, enabling rapid integration with enterprise business systems to achieve full-process connectivity.

III. Why choose Kailing Technology for enterprises connecting to Leqi?

▪ Efficient and convenient integration experience

Kailing Technology's fully digitalized e-invoice Leqi integration service, with its efficient integration process and convenient operating experience, has become the first choice for enterprises connecting to the Leqi platform. Compared with traditional integration methods, Kailing Technology's service greatly reduces enterprises' investment in API development, process design, validation logic, and more. Enterprises no longer need to design complex invoicing and reverse processes themselves, nor worry about invoicing failures caused by incorrect API call sequences. Kailing Technology has completed the development of all process nodes and provides front-end operation pages, so enterprises can simply integrate and go live quickly, enjoying the convenience brought by Leqi Direct Connection.

▪ Comprehensive process design and validation logic support

In Leqi Direct Connection, process design and validation logic are the two major difficulties. With rich industry experience and a professional technical team, Kailing Technology provides comprehensive validation logic support for the parameter passing of enterprise invoicing data. Whether it is the accuracy of the invoicer's tax number or the matching of tax codes and tax rates, Kailing Technology can perform precise validation, effectively reducing enterprises' tax risks. At the same time, for vague error messages returned by the Leqi interface, Kailing Technology can also help enterprises quickly locate and solve problems through in-depth analysis and experience-based judgment, ensuring the smooth progress of the invoicing process.

▪ Layout file composition and multi-invoice type compatibility

Kailing Technology demonstrates outstanding technical strength in layout file composition. After an enterprise issues an invoice, Kailing Technology's system can automatically generate invoice files in standard-compliant PDF, OFD, XML, and other formats without the enterprise needing to compose them itself, greatly saving time and labor costs. In addition, for different types of invoices, Kailing Technology's API services also achieve good compatibility, easily handling VAT special invoices, ordinary invoices, electronic invoices, fully digitalized e-invoices, and more, meeting enterprises' diverse invoicing needs.

▪ Sandbox testing and operation interface optimization

During the sandbox testing stage, Kailing Technology provides comprehensive guidance and support for enterprises' testing work. Enterprises can successfully complete all testing tasks within the specified 72 hours, avoiding unnecessary delays caused by test failures. At the same time, Kailing Technology also focuses on optimizing the operation interface design, providing enterprises with a concise and easy-to-use front-end operation page. From permission management to invoice filling, from approval-based invoicing to invoicing record statistics, and then to invoice delivery and group reports, enterprises can easily complete various operations in an intuitive operation interface, greatly improving user experience and work efficiency.

▪ Thoughtful customized services and after-sales support

Kailing Technology is well aware that each enterprise's business needs and management processes differ, and therefore provides flexible customization services. Whether it is configuration of standard functions or custom development of personalized functions, Kailing Technology can meet the diverse needs of enterprises. For example, Kailing Technology's system supports electronic invoice printing, merging and splitting, invoice remarks column concatenation, automatic/manual email and SMS sending, and other functions, helping enterprises achieve more refined invoice management.

In terms of after-sales support, Kailing Technology spares no effort. After enterprises connect to the Leqi platform, Kailing Technology's professional team will continue to provide telephone/WeChat service support to ensure that enterprise issues can be resolved promptly. For urgent matters, Kailing Technology promises 7*8 hours of on-site support, creating a solid technical backing for enterprises.

For enterprises, how to successfully build a Leqi platform in the shortest time so that it can be fully applied to the entire lifecycle of fully digitalized e-invoices is both a large-scale project requiring overall coordination and one that must be truly integrated into everyFinance and TaxThe meticulous engineering of processes.

In the process of Leqi Direct Connection, if a team with extremely rich practical experience participates, then while ensuring the normal operation of current business, every step of the planning can be made clear and secure, the back-end deployment and upgrades can be done well, and it will have the capability for full-group joint debugging, promoting coordinated go-live across multiple cities and multiple business segments, ultimately achievingFinance and TaxThe goal of digital upgrading.

Kailing TechnologyThe fully digitalized Leqi solution covers Leqi platform connection as well as invoicing and invoice usage capabilities, helping enterprises quickly connect to the Leqi platform and enjoy the convenience brought by fully digitalized e-invoices：https://www.kailingteck.com/h-col-123.html 。

As a comprehensive business-finance-tax digitalization solution service provider, Kailing Technology provides business-finance-tax management digital transformation products and operational services for various government agencies, institutions, and large, medium, and small enterprises. The product line includes:

Solutions for sales contract management system, procurement contract management system, fully digitalized Leqi interface project, automatic output VAT invoicing system, invoice issuance for individuals system, employee expense control and reimbursement system, input VAT invoice management system, supply chain collaborative reconciliation system, imaging OCR recognition system, automatic financial bookkeeping system, electronic accounting archives system and other businesses, comprehensively advancing the digitalization process across various fields.

If you have any business-finance-tax digital transformation needs, welcome to contact us. Beijing Kailing Technology will serve you wholeheartedly.