Specialized Engineering Under SAC Code 998338

Specialized Engineering Services help businesses plan, design and execute projects in a safe and efficient way. In day to day work, clients engage these services for feasibility studies, concept plans, detailed engineering and on-site technical support so that projects meet performance and safety requirements.

SAC 998338 is used when the main work relates to specialized engineering services for projects not classified elsewhere It covers professional involvement from early planning through to implementation support, depending on what is agreed in the contract.

In practice, assignments under this code often touch areas like custom engineering. Using SAC 998338 under GST helps consultants and clients keep technical scope and tax treatment aligned for each project.

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998338 SAC Code GST Rate

Review old and new GST rates for Specialized Engineering under 998338 SAC Code.

From a GST angle, specialized engineering services are treated as supply of services. The taxable value usually includes professional fees, design or review charges, visit fees and any reimbursable costs that are billed as part of the same engineering assignment.

After the September 2025 GST revision, most engineering and technical consultancy services that do not have any special notification remain under the standard 18% slab. Registered business clients can generally claim input tax credit when these services are used for making taxable supplies or for running their business, subject to normal ITC conditions.

The table below gives the prevailing standard GST rate for SAC code 998338.

SAC Code

998338

Description

Engineering services for other projects n.e.c.

New Rate

18 %
Standard

Old Rate

18 %

Notes

This residual engineering code covers projects not classified elsewhere; professional-services overviews for 9983 mark such services at 18% with ITC and there is no notification reducing this rate in Sept 2025.

In practice, firms that provide specialized engineering services should apply 18% GST on the taxable value, quote SAC 998338 on their tax invoices and keep the same classification in their GST workings so that billing, costing and input tax credit remain easy to follow.

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Explore More SAC Codes Under 9983

Practical Classification Guidance

When selecting a code from the 9983 group, service providers should choose the SAC that best describes their primary service, whether it is specialized engineering services or another focused engineering discipline. Using the correct six digit SAC and GST rate in % keeps proposals, work orders and GST returns aligned for both the consultant and the client.

Conclusion

SAC 998338 is meant for specialized engineering services where specialised technical input is provided in return for professional fees. These services are generally taxed at 18% under GST, with ITC normally available to eligible registered recipients when the services are used for their taxable business. 

Frequently Asked Questions

Clear answers to common queries about SAC Code 998338 and GST compliance.

What is SAC code 998338 in GST for specialized engineering services?

SAC 998338 is used for specialised engineering consultancy that does not clearly fit into standard engineering categories. It covers unique, custom or highly technical engineering assignments for specific industries or projects, such as niche machinery design, experimental structures, special testing rigs or new process development support.

Does SAC 998338 cover custom engineering projects not classified elsewhere?

Yes. When an engineering job is very specialised and not exactly covered by building, industrial, transport or environmental engineering SACs, it may be grouped under SAC 998338. Examples include special purpose equipment design, pilot plant engineering or unique experimental installations with tailor made technical solutions for clients.

What GST rate applies to specialized engineering consultancy under SAC 998338?

Specialised engineering consultancy under SAC 998338 is normally taxed at 18%. GST applies to consulting charges, design fees and related technical support invoices. If services qualify as exports, they may be zero rated. Service providers should clearly describe the specialised scope so that classification under this code is justified.

When should a firm choose SAC 998338 instead of other specific engineering SAC codes?

A firm should use SAC 998338 when the work does not match descriptions of building, industrial, transport, environmental or other specific engineering codes, but is still engineering consultancy. If another SAC clearly covers the service, that specific code should be preferred. Accurate classification reduces disputes during GST scrutiny or audits.

Can clients claim ITC on GST paid for SAC 998338 services used in their projects?

Businesses can usually claim ITC on GST charged under SAC 998338 when services are used for taxable projects or operations. They must keep proper agreements and invoices to show that specialised engineering advice helped create or improve assets or services which generate taxable turnover under GST.

Important Disclaimer

The above does not constitute professional advice or a formal recommendation. We recommend consulting a professional tax consultant before acting on the information contained in this piece of content.