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GST registrationCBIC · GSTN
Above ₹20 lakh turnover — exports count towards it · CBIC
Required once aggregate turnover crosses the threshold — ₹40 lakh for goods and ₹20 lakh for services in most states — and in some cases from the first sale, such as most inter-state supplies of goods.
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LUTCBIC
Export services without paying IGST
A Letter of Undertaking (Form GST RFD-11) lets exporters of goods and services, and suppliers to SEZs, supply without paying IGST. It is filed for each financial year.
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Professional taxState government
In states that levy it
A state tax on professions, trades and employment, levied in states such as Maharashtra, Karnataka and West Bengal. Employers register and deduct it from salaries.
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ESI & PF registrationEPFO · ESIC
10 / 20+ employees · EPFO, ESIC
Provident fund applies from 20 employees and ESI from 10 (in notified areas). Registration is due once you cross the count, and monthly contributions follow.