Short answer: above ₹5 crore of asset value the scheme is not available at all. There is no higher charge above the line and no option to declare part of it. The ₹1 crore ceiling on entry 1 of the Table works the same way — as a cliff, not a band.
Both are eligibility tests rather than rate bands, and that distinction changes how you approach the numbers.
A cliff, not a band
Most tax thresholds are bands: cross one and a higher rate applies to the excess. These are not.
₹5 crore. Where the value of the assets exceeds it, CBDT's FAQ is explicit that the assessee is not eligible to avail the scheme. Not a higher charge — no scheme.
₹1 crore. The ceiling on entry 1 of the Table in Section 133 caps the aggregate of the undisclosed foreign asset value and the undisclosed foreign income falling within that entry. Same structure.
The consequence is that the computation is not a pricing exercise but a gate. You are either inside or you are not, and there is nothing to optimise across the boundary.
Partial declaration is not a route through it
The instinct on seeing a cliff is to look for a way to sit below it. There is not one here.
The limit is tested on the value of the assets — not on what you elect to put in the form. And selecting a subset in order to fall under the line engages Section 134(3), which invalidates a declaration where any material particular is found to be false at any stage. That phrase has no time limit, so a declaration built that way does not become safe with age.
What actually goes into the base
This is where more cases turn than on the arithmetic, and it works in the taxpayer's favour more often than people expect.
Section 131 defines an undisclosed foreign asset. An asset whose source of investment is explained is not one.
The clearest example: shares received under an employer plan and taxed as a perquisite on vesting. Their source is explained — they were taxed as salary when they vested. They do not enter the base, and they do not count towards the ceiling. Only the unreported income on them does.
So someone holding a large vested equity position, who assumes the whole holding counts, may conclude they are far over the line when the amount actually in the base is a fraction of it. Establishing what is genuinely an undisclosed asset is therefore the first step, not the last.