Hello Sir,
Please refer to below explanation and taxability applicable-
Job Period- Outside India
FY 2017-18 : Period covered April 1, 2017 till March 31, 2018
I understand that you were completely working outside India. This means you qualified as non resident of India for the FY 2017-18 and hence nothing was taxable in that year in India as the income was purely sourced and received outside India.
FY 2018-19 : Period covered April 1, 2018 till July, 2018
In the financial year 2018-19, since you returned in/after July, 2018 back to India, you certainly qualify to be resident. Being a resident, you are taxable on global income. Thus, at the time of filing the tax return, salary earned outside India for the April 2018- July, 2018 shall be taxable in India.
Complexity: This global period salary is getting taxed twice since you say taxes were already deducted by Singapore authorities. In such case , there is article 25 of DTAA between India and Singapore, which extends the benefit of claiming Foreign tax credits (FTC) against the taxes payable in India on that global income. In the nutshell, you will pay the differential tax leviable in India on the global service period.
Method of computation of FTC:
1. Compute Indian Income (A)
2. Compute Foreign period income (B)
3. Club together to compute total taxable income (A+B=C)
4. Compute taxes on (c) at the tax rates applicable in India. This is (D)
5. Take out the total tax paid in Singapore using your return filed there or any other document that you possess. (E)
6. Compute effective tax rate in India {D/C*100 }= (F)
7. Compare E and F and the least of the two shall be your FTC amount.
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This FTC shall be claimed as credit against the total taxable income in India to avoid Double taxation of income in India.
This is just on the basis of the disclosures made by you in the query. Answer may vary if there are any changes in the facts of the case.
Hope this helps !
Thanks
Damini