Updated Return or FAST-DS: Which Route Works Better for Undisclosed Foreign Income or Assets?
The 60% vs 70% comparison can be misleading – because the two levies operate on completely different bases
Foreign income and foreign assets have become one of the most sensitive areas of tax compliance. A missed foreign dividend, forgotten overseas bank account, unreported RSU holding or an investment abroad omitted from Schedule FA can suddenly turn into a very expensive compliance problem.
But taxpayers now have two possible routes to consider in appropriate cases – filing an Updated Return of Income or using the FAST-DS scheme. At first glance, the comparison looks simply: The Updated Return can involve additional tax of up to 70%, while FAST-DS may involve an effective 60%. So, should one simply choose the 60% route?
Not necessarily.
The most important point is that the two percentages are calculated on different bases. That difference can completely change the answer.
Updated Return: 48 months, but at a rising cost
The Updated Return route permits a taxpayer, subject to the statutory conditions, to correct certain omissions within 48 months from the end of the relevant assessment year.
But the longer one waits, the more expensive the additional tax becomes:
– Within 12 months: 25%
– More than 12 months but within 24 months: 50%
– More than 24 months but within 36 months: 60%
– More than 36 months but within 48 months: 70%
Therefore, for a return being considered today, the broad additional-tax rates would work out as follows:
| Assessment Year | Additional Tax |
|—|—:|
| AY 2025-26 | 25% |
| AY 2024-25 | 50% |
| AY 2023-24 | 60% |
| AY 2022-23 | 70% |
The temptation is obvious: “FAST-DS is 60%, while an old Updated Return is 70%. Therefore, FAST-DS must be cheaper.”
That conclusion can be completely wrong.
The real difference: 60% of what and 70% of what?
This is where the calculation becomes interesting.
FAST-DS broadly looks at the undisclosed income or asset value and applies the prescribed levy on that base, subject to its eligibility conditions and monetary limits.
An Updated Return, on the other hand, does not simply levy 70% of the foreign income. The additional tax is calculated with reference to the tax and interest payable as determined under the Updated Return mechanism.
That means the taxpayer first considers the applicable tax rate, available deductions and eligible foreign tax credit. Only then does the additional tax come into play.
So, comparing “60%” with “70%” without comparing the tax base is like comparing the price of a car with the price of its petrol. Both involve money, but they measure different things!
Example: Foreign dividend with Foreign Tax Credit
Suppose an Indian resident taxpayer received ₹10 lakh of dividend income from the United States.
Assume tax of ₹3 lakh was already withheld in the United States and the taxpayer is entitled to appropriate foreign tax credit in India.
If the Indian tax liability on that income works out to ₹3 lakh, the foreign tax credit may substantially reduce the additional Indian tax payable.
For illustration, if the eligible credit reduces the Indian tax liability to ₹50,000, the Updated Return additional tax is calculated with reference to that residual tax liability and interest – not simply 70% of the ₹10 lakh dividend.
The economics can therefore be dramatically different.
A taxpayer may be looking at an Updated Return cost of roughly ₹1.3 lakh, depending upon the precise interest and statutory computation, instead of a FAST-DS levy calculated as a percentage of the entire ₹10 lakh.
This is why taxpayers with substantial foreign tax credit should not automatically rush towards the scheme merely because its headline percentage looks lower.
Special-rate income can make the Updated Return even more attractive
The same logic can apply where the foreign income is taxable at a special rate.
Suppose the taxpayer is not otherwise in the highest marginal slab, or the particular income is subject to a special rate. FAST-DS does not adjust itself merely because the taxpayer’s actual Indian tax burden is lower.
The Updated Return mechanism, however, works through the actual additional tax liability.
Consequently, the taxpayer’s effective tax rate is an important variable.
The younger the assessment year and the lower the residual Indian tax after available credits, the stronger the case for examining the Updated Return.
When FAST-DS can clearly win
Now consider a completely different situation.
Suppose a taxpayer’s foreign asset was omitted from the return, but the income arising from that asset was already correctly offered to tax.
Take the example of Restricted Stock Units (RSUs).
The shares may have been taxed through payroll when they vested, and subsequently the taxpayer may have reported the capital gain when the shares were sold. But the foreign asset may have inadvertently been missed in the appropriate foreign-asset disclosure.
In such a situation, there may be no additional income-tax liability arising merely from correcting the asset disclosure.
That creates a problem for the Updated Return route because an Updated Return is not a general-purpose “correction form”. It is available only when the statutory conditions are satisfied and it results in additional tax payable.
This is precisely where the FAST-DS route can become valuable.
Where the prescribed conditions are satisfied, the scheme provides a flat ₹1 lakh route for an asset omitted from the return even though the related income had already been taxed, subject to the applicable threshold.
Here, comparing ₹1 lakh with a potentially unavailable Updated Return route makes the choice considerably easier.
Older years: the calculation becomes painful
The position can reverse again when the income is old and there is little or no foreign tax credit.
Suppose foreign income remained completely undisclosed and no tax was paid abroad.
For an old year falling into the 70% additional-tax bracket, the Updated Return can become expensive because interest is also part of the computation and the additional tax applies with reference to the prescribed tax-and-interest base.
After several years, the overall outgo can approach three-fourths of the underlying income, depending upon the exact facts and period of interest.
In such circumstances, the FAST-DS route, where available, may become financially more attractive.
Eligibility is more important than arithmetic
Before calculating which route is cheaper, the first question should be:
“Am I eligible?”
An Updated Return cannot simply be used whenever a taxpayer discovers an omission.
Among other statutory restrictions, it cannot be used to:
– declare or increase a loss;
– claim or increase a refund;
– reduce the tax liability already determined/returned;
– make a filing where there is no additional tax payable;
– file after the permitted 48-month period; or
– use the route in circumstances where statutory proceedings or specified information restrictions prevent such filing.
The interaction with foreign-asset disclosures is particularly important. Where information relating to undisclosed foreign assets or income has already entered the specified statutory framework, the availability of the Updated Return needs to be examined carefully.
FAST-DS too is not an unlimited amnesty window. It has monetary thresholds and is available only for the prescribed period, currently up to 31 December 2026.
Therefore, eligibility must come before comparison.
The hidden cost: Schedule FA exposure
There is another issue that taxpayers frequently overlook.
Filing an Updated Return may regularise the income-tax computation, but that does not necessarily mean that every consequence of a foreign-asset reporting failure disappears.
A taxpayer who omitted a reportable foreign asset may still face consequences under the Black Money (Undisclosed Foreign Income and Assets) and Imposition of Tax Act, 2015, including the prescribed penalty exposure for non-disclosure.
The commonly discussed figure is ₹10 lakh for each year of non-reporting, subject to the statutory provisions and applicable exceptions.
This changes the economics completely.
The real comparison may therefore not be:
₹1.3 lakh vs ₹6 lakh.
It may instead be:
₹1.3 lakh + continuing foreign-asset disclosure exposure
versus
₹1 lakh/₹6 lakh under the scheme + statutory protection or closure of the relevant exposure, where the scheme conditions are fulfilled.
That is a much more meaningful comparison.
Three questions that should be answered before choosing the route
A taxpayer considering regularisation should prepare a side-by-side computation based on at least three variables.
1. How old is the assessment year?
A recent year may attract only 25% additional tax under the Updated Return mechanism. An older year may attract 60% or 70%.
Time is therefore literally money.
2. How much Foreign Tax Credit is available?
This can completely alter the calculation.
Foreign tax already paid and eligible for credit may significantly reduce the residual Indian tax on which the Updated Return additional tax is computed.
3. At what rate is the income taxable in India?
A taxpayer’s actual Indian tax liability matters. The headline FAST-DS percentage should not be compared with the Updated Return percentage without first determining the Indian tax liability.
And there is a fourth question that deserves equal importance:
4. What is the value of immunity?
Sometimes the cheapest route on a spreadsheet is not the cheapest route in real life.
If a particular scheme provides protection from the consequences of the foreign-asset reporting default, that protection itself has an economic value.
One size does not fit all
Consider three taxpayers.
Taxpayer A: A resident received foreign dividend of ₹10 lakh in a recent year and has substantial foreign tax credit. The Updated Return may be significantly cheaper because the additional tax operates on the residual Indian tax liability.
Taxpayer B: The taxpayer’s foreign income was already fully taxed in India, but the foreign asset itself was omitted from the return. An Updated Return may not even be available if there is no additional tax payable. The ₹1 lakh FAST-DS route, if all conditions are met, could therefore be highly attractive.
Taxpayer C: The taxpayer has a much older year, no meaningful foreign tax credit and substantial undisclosed foreign income. At the 70% Updated Return stage, the cost can become very high. FAST-DS may deserve serious consideration if the taxpayer falls within its prescribed eligibility and thresholds.
Same problem. Three taxpayers. Three different answers.
The message is simple
Do not compare 60% with 70%. Compare the final rupees payable — and compare them with the compliance protection obtained.
For every case involving undisclosed foreign income or assets, the professional should prepare two computations:
Route 1 – Updated Return
Tax + interest + applicable additional tax + continuing exposure, if any.
Route 2 – FAST-DS
Scheme levy + applicable amounts + the extent of statutory protection/closure available.
Only after both calculations are made should the taxpayer decide.
The Updated Return is not necessarily expensive merely because the additional-tax percentage is 70%. And FAST-DS is not necessarily cheap merely because its headline rate is 60%.
The percentage is only the headline. The real story is the base on which the percentage operates.
For taxpayers sitting on an old foreign-account or foreign-asset omission, the clock is already running. With FAST-DS having a limited window up to 31 December 2026, waiting for the “perfect time” could itself become the most expensive option.
Foreign income omitted? Foreign asset missed? Don’t compare percentages. Compare the complete cost of compliance — tax, interest, additional tax, penalty exposure and immunity.
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Disclaimer: The comparison above is intended as a conceptual guide. Eligibility, tax computation, foreign tax credit, interest, thresholds and the availability and extent of protection under FAST-DS must be examined with reference to the precise facts and the applicable statutory provisions before choosing either route.
