There is one mistake I see NRI clients make every single quarter, and it is not exotic. It is the assumption that tax deducted at source is the end of the matter.

It is not. In many cases it is not even close, and the gap runs in both directions — sometimes a large refund never claimed, sometimes a liability quietly accruing interest.

Why withholding is not the final answer

For non-residents, tax is deducted at source on most Indian income: rent, interest, capital gains on property sales, dividends. The rates applied are statutory rates applied to a gross amount. They take no account of what the income actually is once expenses, exemptions, cost indexation and treaty positions are applied.

On a property sale by a non-resident, this is stark. Tax is withheld on the sale consideration, not on the gain. If the property was held for years and the gain is a modest fraction of the sale price, the withholding can be a multiple of the actual liability. That difference is recovered by filing a return — and only by filing a return.

I see clients who have sold property in India, had a substantial sum withheld, and never filed because “the tax was already paid”. The money sits with the department indefinitely.

The same mistake in the other direction

The reverse is equally common. Withholding on a particular stream does not mean the total liability is covered. An NRI with rental income, interest from multiple banks, and gains from mutual funds may find that withholding across those streams falls short once everything is aggregated.

The shortfall does not sit still. Advance tax obligations apply, and interest runs on what was not paid on time. Clients who discover this eighteen months later pay the tax plus interest on a liability they believed was settled.

The quarterly habits that prevent both

This is why I treat it as a quarterly rather than an annual matter. Four things, each taking very little time:

  • Check the tax credit statement. Your consolidated tax statement shows what has actually been reported as deducted against your PAN. Deductors make errors — wrong PAN, wrong quarter, wrong amount. Caught in the quarter, this is a phone call to the deductor. Caught after the return is filed, it is a mismatch notice
  • Aggregate the income streams. Add up what is coming in across rent, interest, dividends and any gains. Compare against what has been withheld
  • Pay advance tax if there is a gap. Cheaper than interest, and takes ten minutes
  • Keep the treaty paperwork current. A residency certificate has a validity period. Where a lower treaty rate applies, the documentation must be with the deductor before the deduction, not produced afterwards

The particular case of property

Property sales deserve their own note because the sums are large and the process has a route most people miss. A non-resident seller can apply for a certificate authorising deduction at a lower rate, based on the actual computed gain rather than the gross consideration.

Obtained before the transaction, it means the correct amount is withheld and there is no refund to chase. It takes time to obtain, so it has to be started while the sale is being negotiated, not after the buyer has already deducted.

Clients who plan this well ahead do not have money locked with the department for two years. Clients who call me the week of registration do.

Bank account types and the paperwork around them

The other recurring quarterly issue is operational rather than computational: money in the wrong kind of account, or repatriation attempted without the certification that has to accompany it. Getting funds out of India is procedural, and the procedure assumes the tax position has been settled and documented. Clients who have not filed returns discover this precisely when they want to move money.

What it comes down to

Non-resident taxation in India is not conceptually difficult. It goes wrong because it is administered in pieces — a deductor here, a bank there, a broker somewhere else — and nobody is looking at the whole. The department sees the whole. The taxpayer usually does not.

Fifteen minutes a quarter with the tax credit statement and a running total of income closes almost every gap I encounter, and turns the annual return into a confirmation of what you already knew rather than a discovery exercise.

If your Indian income arrives from several sources and nobody is reconciling them against your tax credit statement, AeTx handles NRI tax positions end to end, including the lower-deduction applications that save the most money when they are started early.