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How should you choose the type of fully digitalized e-invoice interface?

Published: 2024-01-19 11:43

The popularization of fully digitalized e-invoices has greatly improved enterprise business-finance-tax management efficiency, while also leaving enterprises facing issues of business-finance-tax system upgrading and integration with tax platforms, such as verified login to tax platforms, network stability, multi-account and multi-tax-number management, standardization and security of business data, and simplification of invoicing processes, all bringing new challenges to enterprise financial management.


Currently, there are mainly two types of fully digitalized e-invoice interfaces, choosing the right API can effectively improve work efficiency and support the digital transformation of enterprise business-finance-tax.


I. Leqi Direct Connection interface

Tax authorities provide Leqi Direct Connection services for fully digitalized e-invoices to eligible taxpayers. After review, taxpayers may conduct direct connection with their own information systems using the standards provided by tax authorities, and perform tax-related services such as issuing and receiving fully digitalized e-invoices in their own information systems.


However, there are conditional restrictions on applying for the Leqi Direct Connection interface,The basic conditions that the direct connection entity should have are as follows:

1. Has been included in the scope of pilot taxpayers for fully digitalized electronic invoices (hereinafter referred to as "fully digitalized e-invoices");

2. Tax credit rating is Grade A or B;

3. The enterprise and the enterprises that simultaneously request to become its user entities had total operating revenue of more than 50 million yuan in the previous year;

4. The enterprise and enterprises that simultaneously request to become its user units must have a combined cumulative invoice issuance volume and invoice receipt volume of no less than 50,000 in the 12 months prior to the month of initiating the access request, or a cumulative invoice issuance and receipt volume of less than 50,000 but an invoicing amount of no less than RMB 500 million;

5. No major tax violations determined by tax authorities in the past three years;

6. Be able to provide relevant tax-related data in accordance with the law and the requirements of tax authorities, including but not limited to the identity information of the user entity, remuneration account information, operating income status, etc., as well as other tax-related data that need to be specially provided, such as goods flow, capital flow, and cash flow;

7. For taxpayers in industries related to people's livelihood such as hospitals, thermal power and public transportation, whose operating revenue and invoice issuance/receipt volume do not meet the above conditions, tax authorities may appropriately lower the access condition standards according to actual circumstances;

8. Or meeting other conditions determined by the tax authority.


II. Third-party fully digitalized e-invoice interface

Kailing TechnologyFully digitalized e-invoice interfaceMouth, reducing duplicate data entry and manual data processing, achieving data consistency between the management system and the tax-control invoicing system, effectively reducing labor costs, and optimizing human resource allocation.


Intelligent processing

Perform automated processing such as merging, splitting, adjusting the golden tax difference, and matching tax classification codes according to relevant conditions, enabling automatic invoicing based on preset conditions; one-click batch generation, invoice file sending, one-click write-back, and invoice data export.

Convenient management

Enable invoicing with multiple tax numbers or multiple accounts on one machine, directly connected to the tax bureau platform, staying online without frequent verification logins

Safe and stable

Adopt localized deployment, without going through intermediate servers, collecting and returning data via interfaces, making it more secure and stable

Excellent performance

Intelligent and fast data processing: importing 10,000 records takes only 1 minute; import, batch invoicing, and one-click red-flush enable an invoicing speed of 1 second per invoice, increasing invoicing efficiency by at least 300%

Personalized customization

Kailing TechnologyThe fully digitalized e-invoice interface is compatible with all ERP systems, supports multiple invoice types and industries, can be customized to individual enterprise needs, and can be integrated into the original ERP system or used directlyKailingofLingshuitongClient side

Simple and easy to use

The API is integrated into the original ERP system, following existing habits, requiring no additional learning and no platform switching. If the client is used, it not only has a friendly interface but also supports visual configuration, allowing users to customize function buttons, display effects, etc.


Beijing Kailing Technology Co., Ltd.——an enterprise business-finance-tax digitalization solution service provider.

Kailing Technology provides solutions for sales management systems, procurement management systems, output invoicing systems, input invoice collection systems, imaging management systems, financial posting systems, electronic accounting archives, fully digitalized e-invoice and Leqi interfaces and other businesses according to enterprise needs, professionally and efficiently helping enterprises transform and upgrade their business-finance-tax digital management.

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

Third-party fully digitalized e-invoice interface


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Common Questions
What types of fully digitalized e-invoice interfaces are there?
There are mainly two: the Leqi Direct Connection interface and third-party fully digitalized e-invoice interfaces. Leqi Direct Connection requires meeting tax authority conditions, such as tax credit rating A/B, annual revenue of 50 million yuan or more, etc.; third-party interfaces such as Kailing Technology support local deployment, multi-tax number management, and batch invoicing, and are compatible with ERP systems.
What are the application conditions for the Leqi Direct Connection interface?
Must meet: already included in the fully digitalized e-invoice pilot; tax credit rating A/B; total revenue of the enterprise and user units in the previous year of 50 million yuan or more; total invoice issuance and receipt volume in the 12 months before initiation of no less than 50,000 copies or invoicing amount of no less than 500 million yuan; no major tax violations in the past three years; able to provide tax-related data. Industries related to livelihood security may be appropriately relaxed.
What advantages do third-party fully digitalized e-invoice interfaces have?
Advantages of Kailing Technology's third-party interface: intelligent processing (automatic merging and splitting, matching tax classification codes); convenient management (invoicing with multiple tax numbers, no frequent login required); secure and stable (localized deployment, not passing through intermediate servers); excellent performance (importing 10,000 records takes only 1 minute, invoicing speed 1 second per invoice); personalized customization (compatible with ERP, supports multiple invoice types); simple and easy to use (can be integrated or use the client).
How does the fully digitalized e-invoice interface improve invoicing efficiency?
Third-party interfaces such as Kailing Technology can achieve batch generation and one-click red-letter reversal, with invoicing speed reaching 1 second per invoice and efficiency increased by more than 300%. Leqi Direct Connection reduces manual operations through direct system connection. Both can reduce duplicate data entry and optimize human resource allocation.
How should enterprises choose a fully digitalized e-invoice API?
If the enterprise is large and meets the Leqi conditions (such as revenue above 50 million and invoice volume above 50,000), Leqi Direct Connection can be chosen; otherwise, a third-party interface such as Kailing Technology is recommended, with no high threshold, supporting multiple tax numbers, local deployment, compatibility with existing ERP, and high invoicing efficiency with security and stability.
Related solutions
Leqi Direct Connection solution
Direct connection to the tax bureau's Leqi channel, connecting the last mile of ERP →
Output Invoicing Management Platform
As soon as business occurs, invoices are automatically issued, automatically delivered, and automatically returned →
Electronic Accounting Archive Management
Electronic voucher archiving, single-set system, compliant and auditable →
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