How do part-time staff of a company issue invoices as individuals? A full analysis of Kailing Technology's invoice issuance for individuals API technical integration

I. The part-time invoicing challenge: the "hidden black hole" on the path to corporate compliance

On January 1, 2026, the new VAT Law officially took effect. The penetrating supervision of China Golden Tax Phase IV leaves every corporate expenditure nowhere to hide. However, a long-neglected problem is becoming the nightmare of more and more enterprises—the labor services of part-time personnelRemunerationWhere do expense invoices come from?

For enterprises, part-time personnel are an important part of flexible employment: external experts for medical academic conferences, part-time teachers on online education platforms,Independent designers in the design industry…These individuals provide services to enterprises, and enterprises need invoices to compliantly list costs. But the key problem is: as natural persons, they do not have the qualification to issue invoices themselves.

The only traditional solution is for individuals to personally go to the tax bureau, queue, fill out forms, submit documents, and wait for review，Or perform many complex steps through the electronic tax bureau。A single instance takes hours and the cycle lasts days, so willingness to cooperate is easy to imagine. The final result is that enterprises' huge labor expenditures cannot obtain compliant invoices; they either "record white slips" and face tax risks, or give up cost deductions, causing inflated profits.

II. Technical Breakthrough: "Moving" the Tax Bureau into Enterprise Business Processes

Kailing Technology Invoice Issuance for Individuals Solution"Embed" the tax bureau's invoice issuance for individuals function into the enterprise's business processes, allowing individuals to complete the entire process from registration, face scanning, application, payment, to invoicing with minimal operations within familiar business applications.

（1.）The four-step leap from "people running errands" to "data running errands"

▪ Step 1: Seamless registration and one-time face scan authentication

Traditional tax registration requires individuals to download the electronic tax bureau App, fill in large amounts of information, and switch applications to complete real-name verification. Through interface integration, Kailing Technology embeds the electronic tax bureau's registration and face-scanning modules directly into an enterprise's existing App or mini-program. Individuals do not need to jump or download a new application and can complete registration and face scanning within the business scenario.

The technical breakthrough lies in "one face scan, dual verification"—integrating public security identity authentication and tax real-name authentication, meeting compliance requirements while minimizing the operating threshold. Taking medical academic conferences as an example, experts only need to complete face scan authentication via mobile App after the meeting, reducing the time from several hours in the past to a few minutes, a vastly different experience.

▪ Step 2: Intelligent filing and automated tax calculation

Filling in invoicing information is another pain point. Individuals often cannot understand professional terms such as "place where taxable activity occurs," "item name," and "tax rate," resulting in a high error rate and repeated modifications. Kailing Technology introduces intelligent recognition technology to automatically read information from documents such as ID cards and contracts and intelligently fill most invoicing content, greatly reducing manual input. At the same time, the system automatically calculates the tax payable based on business type, amount, and local policies, and individuals only need to confirm.

▪ Step 3: Multi-channel payment and real-time invoicing

At the tax payment stage, the system supports multiple payment methods: UnionPay payment and third-party paymentetc.。After the individual confirms the tax amount and completes payment online, the system automatically submits an invoicing application to the tax bureau.

In the review stage, the system obtains review status in real time through the interface and, when necessary, reminds the individual to scan their face again to "stay active," ensuring the process is not interrupted. After approval, the invoice is automatically generated and pushed to the enterprise's reserved email and the individual's account, with no manual intervention throughout the process.

▪ Step 4: Automated Archiving of the Evidence Chain

The core requirement of China Golden Tax Phase IV is "business authenticity." Kailing Technology's system automatically collects and associates four types of key evidence: contracts and agreements, payment vouchers, business process records, and invoice information. All evidence is stored in a structured manner and supports one-click retrieval, ensuring that every invoice issued for individuals has a complete "identity file" that is traceable and auditable at any time.

（II）Elastic architecture: integration capability adapted to the diverse needs of thousands of enterprises

Kailing Technology's solution is not one-size-fits-all, but provides full API interfaces, supporting enterprises in flexible deployment according to their own systems.

For enterprises with mature business systems, embedded integration can be achieved through API/SDK. Natural persons complete all operations within the original application without being aware of the backend connection to the tax bureau. For enterprises that wish to go live quickly, Kailing provides standardized H5/mini-program solutions that can be directly embedded into the enterprise's official account or service window.

At the performance level, the system supports high-concurrency processing, meeting invoicing needs for tens of thousands of users. This means that even if thousands of people apply for invoicing simultaneously, the system can handle it smoothly without congestion or delays.

III. Proven in practice: the real value of the solution

▪ Medical academic conference scenario

A certain leading medical marketing company hosts hundreds of academic conferences annually, cooperating with over ten thousand experts, with a long-term low lecture fee invoice acquisition rate. Experts are unwilling to cooperate—single invoicing takes too long and they are sensitive to tax burdens; the enterprise, lacking invoices, cannot expense costs and faces tax risks.

After deploying the invoice issuance for individuals system, experts complete face scan authentication and invoicing applications through the mobile App, greatly simplifying operations and significantly improving cooperation. The enterprise's invoice collection rate jumps to over 95%, and all lecture fees can be recorded compliantly. Finance personnel are freed from cumbersome offline errands, corporate tax risks are completely eliminated, and customer trust is simultaneously enhanced.

▪ Online education scenario

A certain online education institution has a huge annual labor service expenditure scale, with part-time teachers scattered across the country. Under the traditional invoicing model, the invoicing cycle for a single person was as long as several days, teacher cooperation was low, and it was difficult for the enterprise to deduct costs.

After accessing the intelligent labor service invoice issuance system, teachers can apply online with one click, taxes are calculated automatically, and invoices are issued immediately, greatly compressing invoicing time. The system ensures that every labor service expenditure obtains a compliant invoice, with complete pre-tax deduction vouchers for corporate income tax. Enterprises achieve significant annual tax savings, and finance labor input is reduced by 70%.

▪ Conference and Exhibition Service Scenario

A certain conference service provider hosts hundreds of large conferences each year, involving a large amount of settlement of external labor personnel expenses. Under the traditional model, the settlement cycle is lengthy and compliance risks are prominent.

After the system is integrated with the conference management platform, it achieves integrated "contract signing-payment-invoicing," greatly shortening the settlement cycle. Compliance coverage reaches 100%, the processing time for a single invoice is shortened from days to minutes, and labor costs are significantly reduced.

IV. Core value: a management upgrade beyond "invoicing" itself

Kailing Technology's invoice issuance for individuals solution solves far more than the single technical problem of "how to issue an invoice"; it brings multi-level management value to enterprises.

▪ Thorough construction of the compliance closed loop:Through automated evidence chain archiving with four-stream consistency, the system ensures every expenditure can withstand tax audits. Enterprises shift from "passively coping with inspections" to "proactively managing compliance," with audit risks reduced to zero.

▪ Real implementation of the efficiency revolution:Under the traditional model, the individual invoicing cycle is measured in "days"; after adopting the system, it is measured in "minutes." Individual cooperation has risen significantly from insufficient to a satisfactory level, and business fund turnover efficiency has improved markedly.

▪ Quantified presentation of cost optimization:Comprehensive costs are significantly reduced, enterprises are completely freed from the tax burden pressure caused by missing invoices, operating costs are simultaneously optimized, and every cent is converted into real retained profit.

▪ Intelligent upgrade of risk control capabilities:The system has built-in business authenticity validation rules to intercept abnormal invoicing requests in real time. For high-risk industries such as freight, the system automatically verifies practitioner qualifications to ensure the invoicing entity is legal and compliant.

With the full implementation of China Golden Tax Phase IV, the digitalization and intelligence of tax collection and administration will continue to deepen. For enterprises, invoice management is no longer an isolated function of the finance department, but an organic component deeply coupled with business processes and fund flows.

Kailing Technology's solution evolves along this trend: from initially solving the single pain point of "difficulty in invoicing for individuals" to gradually expanding to integration with electronic signing, online banking payments, and business systems, forming a complete closed loop of business-finance-tax integration. In multiple cases, the system has achieved data interoperability with business modules, with all invoice information automatically linked and archived, supporting real-time cost analysis and operational decision optimization.

In the future, with the further maturity of interface technology and the gradual unification of national policies, invoice issuance for individualsInvoicingWill evolve from a "special need" to a "standard configuration." What Kailing Technology does is precisely to lay a digital bridge to compliance and efficiency for enterprises—making every transaction traceable, every payment backed by an invoice, and every individual able to participate in modern economic activities conveniently and compliantly like an enterprise.

Choose KailingTechnology, it is not only choosing a tool, but also choosing a trustworthy compliance partner to jointly ride the wave of tax digitalization and empower enterprises to grow steadily and go far：https://www.kailingteck.com/h-col-126.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:

Sales contract management system, procurement contract management system, fully digitalized Leqi interface project, output automatic invoicing system,Reverse invoicing system,The invoice issuance for individuals system, employee expense control and reimbursement system, input VAT invoice management system, supply chain collaborative reconciliation system, image AI OCR recognition system, automated financial bookkeeping system, electronic accounting archives system, and other business solutions comprehensively advance digitalization across various fields.

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

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