Leqi Interface vs Traditional Interface: Kailing Technology Experts Analyze Which Is More Suitable for Your Enterprise

In 2025, the State Taxation Administration will continue to advance the digital transformation of taxation, and the Leqi Direct Connection policy will accelerate implementation nationwide. As tax authorities in Beijing, Shanghai, and other places significantly lower the Leqi entry threshold, more and more enterprises are beginning to evaluate the pros and cons of the Leqi interface versus the traditional invoicing interface.

In this transformation of the business-finance-tax management paradigm, enterprises face a key choice: invest high costs to self-develop a connection to the Leqi platform? Or continue using traditional invoicing interfaces? Or achieve efficient access through third-party professional services?

I. Leqi Interface vs Traditional Interface: Core Differences Comparison

1. Nature and attribution

- Leqi Interface：It is an official direct connection channel provided by tax authorities. Enterprises connect directly to the tax platform through their own systems to automate invoice issuance and receipt, belonging to the "tax-enterprise direct connection" model.

- Traditional third-party interfaces:Encapsulated by the service provider; enterprises must indirectly connect to the tax bureau system through an intermediary platform, essentially relying on a third-party technical intermediary.

2. Technical Implementation and Efficiency

- Leqi interface:Use fixed IP authentication, with no facial verification required during invoicing, support high-concurrency batch processing, and directly transmit invoice data to the tax bureau after local generation, with efficiency significantly higher than traditional methods.

- Third-party interfaces:Relying on the service provider's platform to relay data, invoicing requires QR code scanning or facial authentication, concurrency capacity is limited by the service provider's technology, and invoicing takes about 5 seconds per invoice.

3. Data Security and Transparency

- LeqiAPI:Data is transmitted encrypted via "IP + symmetric key," but the direct connection mode requires enterprises to build high-standard security protection themselves; otherwise, there is a risk of key leakage.

- Third-party interface：Tax-related data must be transferred through service providers, which may cause hidden risks of information leakage, and enterprises cannot fully control the data flow path.

4. Policy Adaptation and Operations & Maintenance

- Leqi interface:Directly synchronizes tax authority rule changes, but interfaces are frequently upgraded, requiring enterprises to complete system modifications within 30 days, otherwise business is interrupted, creating significant operational pressure.

- Third-party interfaces:Relying on service providers to respond to policy updates, which involves lag, but O&M responsibility is transferred to the service provider, resulting in lower implementation costs for enterprises.

5. Cost structure

- Leqi has high initial investment and is suitable for enterprises with large invoicing volumes to amortize costs。

- Third parties charge by invoice volume/annual fee subscription, which may be higher than Leqi in the long run, but initial deployment is fast and the threshold is low.

⚡ Summary of key differences

▪ Leqi Advantages:Efficiency limits, face-scan-free authentication, strong data control, and high long-term compliance;

▪ Third-party advantages:Fast go-live, low technical threshold, strong compatibility during the transition period.

▪ Essential difference:Leqi is the underlying capability that restructures enterprise invoicing processes, while third parties are tools that optimize existing processes. The choice needs to match the enterprise's technical capabilities and strategic needs.

II. Selection strategy: adapt to different enterprise needs

1. Scenarios for prioritizing the Leqi Direct Connection

▪ Large group enterprises: annual revenue ≥ RMB 50 million, annual invoicing volume ≥ 50,000 invoices (in some provinces and cities currentlyLower requirements, subject to announcements of each province and city), and the tax credit rating is A/B.

▪ Sufficient Technical Capability: PossessingProfessionalThe team handles interface development and tax bureau upgrades.

▪ High-concurrency demand: scenarios requiring batch invoicing, such as e-commerce and chain retail.

▪ Livelihood security industries: for hospitals, public transportation, etc., even if conditions are insufficient, tax authorities may relax access.

2. Scenarios for prioritizing traditional third-party interfaces

▪ SMEs: do not meet Leqi revenue, invoicing volume, or credit rating requirements.

▪ Fast go-live requirement: short deployment cycle for third-party interfaces.

▪ Limited Technical Resources: No professional team to handle the complex operations and maintenance of Leqi.

III. Kailing Technology Leqi Solution: The Secure Choice for Enterprise Integration

The Kailing Technology Leqi solution is committed to providing enterprises with systematic, full-process services, integrating consulting, design, development, deployment, and operations and maintenance.

1. Leqi version updates: zero-burden proactive upgrades

▪ Traditional self-building: passively obtaining tax bureau interface update information, requiring hasty reconstruction of proprietary business systems (time-consuming and error-prone).

▪ Kailing Solution: Proactively syncs tax bureau policy changes; business systems need no adjustments; the service provider completes full-chain upgrades, ensuring business continuity.

2. System development: an out-of-the-box mature product

▪ Traditional self-building: developing a Leqi Direct Connection module from 0 to 1 requires overcoming challenges such as encryption algorithms and high-concurrency architecture, with high failure risk.

▪ Kailing Solution: Provides standardized products with a preset tax engine, requiring only simple configuration for integration, shortening the development cycle by over 70%.

3. Cost and cycle: controllable investment, efficient delivery

▪ Traditional self-building: development costs exceed budget, testing cycles are uncontrollable, and the average launch cycle is ≥6 months.

▪ Kailing Solution: Fixed-Price Implementation + Clear Timeline, Completing Deployment to Production Within 90 Days, Avoiding Delay Risks.

4. Technical Architecture: Robustness in High-Concurrency Scenarios

▪ Traditional self-building: requires in-house development to ensure invoicing concurrency and stability, with low fault tolerance in technology selection (for example, choosing the wrong middleware may cause crashes).

▪ Kailing Solution: A built-in distributed architecture verified by hundreds of billions of invoices, automatically scaling to handle business peaks, with a failure rate <0.001%.

5. Policy Response: Compliance Escort by Foreseeing and Acting First

▪ Traditional self-building: passively receiving tax policies, requiring business suspension and system reconstruction when rules change (such as fully digitalized e-invoice rule upgrades).

▪ Kailing Solution: A dedicated tax policy research team anticipates adjustments in advance and automatically pushes update packages, ensuring 100% compliance on the first day a policy takes effect.

6. Transitional compatibility: smoothly connecting business transformation

▪ Traditional self-building: during the paper-to-electronic invoice transition period, multiple systems must run in parallel, and data fragmentation is error-prone.

▪ Kailing Solution: Through a flexible tax control invocation engine, seamlessly compatible with tax control disks/tax control servers/fully digitalized e-invoices, enabling full invoice type management in one system.

7. Team dependency: free up enterprise IT resources

▪ Traditional self-building: requires long-term maintenance of development, operations, and tax expert teams (average annual cost ≥500,000 yuan).

▪ Kailing Solution: Enterprises need only 1 contact person for coordination; requirements, development, and operations are all handled by the service provider's top expert team.

The choice between Leqi Direct Connection and traditional third-party interfaces is far from a simple technical selection; it is a key decision concerning enterprise business-finance-tax management efficiency, compliance, and long-term strategy. There is no absolute best, only the most suitable choice. However, no matter which path is chosen, the key to success lies in efficient, robust, and continuously compliant implementation and operations.

Kailing TechnologyFully Digitalized Leqi SolutionThe solution was born precisely to address this core pain point. We deeply understand the challenges enterprises face in connecting to tax bureaus and provide full lifecycle services from consulting to operations and maintenance。We will use our professional capabilities to clear integration obstacles for you, so that you can ride the wave of Leqi Direct Connection without carrying the burden, focus on your core business, and win a new future in intelligent business-finance-tax management.

Contact Kailing Technology immediately and start an efficient, compliant, and worry-free business-finance-tax direct connection journey：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.