Wednesday, June 3, 2026

Seeding Tomorrow's Tax Base: The Formalisation Argument the Finance Commission Hasn't Made Yet

Every time a worker in Bengaluru makes his or her tax payment, some portion of it flows into the coffers of Delhi and is ultimately distributed back to the farmer in UP or Bihar. This hidden exchange, which runs into several thousand crores annually, keeps the fiscal republic of India intact. But it is now becoming one-sided in a way that requires out-of-the-box thinking by the 16th Finance Commission.

The fiscal anomaly

From the chart, you can see that five states- Maharashtra, Karnataka, Delhi, Tamil Nadu, and Gujarat- alone contributed 76% of the total direct tax collections in the FY 2024-25. However, the total population of these states accounts for only around 27%. In other words, around one-fourth of the people contribute to three-fourths of the revenue collection.

Figure 1 & 2 : "27% of people, 76% of tax"

 


(Click on the image to Zoom)


 Services-Digitalisation corridor

India's direct tax map is not a demographic cartography; it is cartography for formalisation & digitalisation. Maharashtra, Karnataka, Delhi, Tamil Nadu, and Gujarat are five states that generates well over 75 percent of corporate and personal income tax collections, but house not much more than a quarter of the population of the country.

What do they have in common? Not size, but infrastructure for formal economy: they have  the concentration of committed salaried employment in the organisational sectors,  the large corporate head offices, the offices that file taxes for ESOP income (and) capital gains of listed securities, the deepest roots of the gig and platform economy and the digital  literacy and adoption.

We can call it the “Services-Digitalisation corridor”  -  a stretch that runs from Ahmedabad through Mumbai to Delhi and Bengaluru and down to Chennai. In this corridor, the formal wage economy is at its densest, the economy of the digital payment system is richest, and the difference between gross domestic product and the economy of taxable goods and services is at its smallest.

Figure 3: Tax Collection Intensity : (Tax Collected(FY 2024-25) / Total Population(2011 Census) )

(Click on the image to Zoom)

On the other extreme, Uttar Pradesh and Bihar, combined, have a little over a fourth of the total population of India, yet they contribute less than three percent to the direct tax corpus -not on account of being poorer by income standards alone, but rather on account of their incomes arising through informal agricultural activity, trading, and small-scale business which are structurally exempted from any sort of self-assessment regime.The policy message is clear: increasing the scope of the direct tax base is not so much a function of rates or compliance, but of formalisation.

Figure 4:  Ratio of Tax collection/GSDP


(Click on the image to Zoom)

Every extra employment opportunity created in the organized sector, each kirana firm adopting GST invoices, every small-scale contractor paying taxes on income, represents a new taxpayer waiting at the edge of the corridor. And the wider the corridor will become as formalization moves east and north.

 From the above, it is clear that direct tax collection follows formalisation and digital visibility, not population or even GDP. The tax map is actually a map of where the formal services economy lives.

A Tale of Two Indias: Emerging Hubs and Persistent Gaps Telangana and Haryana as the good-news story - formalisation can travel. Then the harder picture: why Bihar, UP, MP, and Odisha remain structurally outside the direct tax perimeter despite economic growth.

The CAGR of Direct Taxes Collections graph for the period FY19-FY25 is by far the most optimistic piece of evidence in this whole analysis and should be interpreted in full detail. The 44% CAGR in direct taxes in Telangana is not a mere statistical deviation, but a testament to the state having emerged as a proper technological/pharmaceutical hub characterized by the presence of large campuses, salaried workforces and listed companies.

Haryana's 18% CAGR reveals a similar story – the state capital of Gurugram is a center of concentration for corporate registered offices and high salary jobs in India, and this is being picked up now by the tax data. The story of these two states is an optimistic one indeed – formalization can indeed spread beyond its immediate location, and direct taxes follow shortly after, not many years later. However, the story on the right side of this chart is less optimistic. The states of Bihar, Assam, Madhya Pradesh, Uttarakhand, and Andhra Pradesh all exhibit almost 0% or negative CAGRs – that is to say, their base for direct taxation is not only low, but even declining.

 Figure 5: CAGR of Direct taxes from FY 2019 -25



(Click on the image to Zoom)

This is not about poor states alone since some of them have even seen decent GSDP growth in this period. The issue is more fundamental than that. The growth in such states is being fueled by industries – agricultural, informal building activities, small-scale retail business and subsistence services – which the income tax administration is unable to access because they lie outside the ambit of its functioning.

What this two-India scenario means is this – whether the growth in the state’s economy is driven by organised and documented economic activities or the massive informal sector.

Lorenz curve of direct tax distribution, FY19 vs FY25

The Lorenz curve presents a tale of quiet and disturbing changes through just one single number: the Gini index for direct tax concentration has changed from 0.6342 in FY19 to 0.6506 in FY25.

In other words, over the past six years, direct taxes collected by the Government in India have become increasingly concentrated. The green curve (FY25) is located further away from the line of equality as compared to the blue curve (FY19), and this implies that the lower 60-70% of the states account for a smaller portion of direct taxes as compared to the prior six years; at the same time, the cluster of higher states has outstripped others.

However, it is essential to highlight that such inequality is not necessarily a story of the richer states becoming wealthier from the perspective of the income level; in fact, it is mostly the story about increasing inequality between formal and informal states.

As far as implications for public policy are concerned, here comes the key takeaway: if one aims at extending the geographic coverage of the direct taxation base, the path we are currently on does not seem to be the right one.

The collection mechanisms in the corridor are performing increasingly efficiently - compliance push factors, expanded TDS regime, reporting capital gains, and even AIS are doing fine wherever formal incomes are already present.

None of these instruments, however, is capable of reaching into the informal economy of Bihar, eastern Uttar Pradesh, or rural Madhya Pradesh, where the Lorenz gap is being stealthily expanded each year due to growth without formalisation.

Figure 6: Lorenz curve of direct tax distribution, FY19 vs FY25



(Click on the image to Zoom)

State cluster map: four fiscal archetypes

The Fiscal-Digital Alignment Chart is perhaps the single most policy-actionable infographic from this whole series of visual representations since, unlike all others before it, it does away with the “Why is there a gap?” question and focuses on the “What can be done about it?” – and the answer to the latter changes according to the four distinct clusters identified by the chart.

In the top right corner of this graph, we find the two states which have already become mature fiscal hubs, characterised by both high levels of digitisation and tax collection compared to their GDP. Here, the solution is not to try pushing further but to simply institutionalise: build compliance infrastructure, reduce leakages in treaties and capital gains, and let it work. Karnataka is just slightly lower than those two, which means that despite being very digitally advanced, the state still has some extraction headroom. However, the real excitement of this visualisation lies in the emerging formalised cluster, including Telangana, Haryana, and Kerala. This cluster occupies the bottom right corner, which suggests that even though these states have reached the level of digitalisation, they still lack tax yield.

The anomaly of the industrial middle, comprising Gujarat, Tamil Nadu, and Andhra Pradesh, is that of digitalisation at moderate to high levels but very low tax-GSDP ratios, implying the existence of an issue of propriety firms and trade enterprises where there is extensive digital payments but opacity in the accounts.

The toughest recommendation is for the catch-up development group comprising Uttar Pradesh, Bihar, Rajasthan, Madhya Pradesh, Odisha, and northeastern states, where both the level of digitalisation and tax-GDP ratio is low. It would be futile to expect changes through any form of nudging or oversight here, since the necessary conditions for direct taxes - employment and organized enterprises - are absent in these regions.

Unspoken but conveyed through this image by the Finance Commission is the idea that while devising equalization payments and devolution schemes, one must take into consideration the structure of tax administration capabilities, and not just the effort, since demanding that Bihar matches the tax-to-GSDP ratio of Maharashtra without first matching its formalisation ratio makes no mathematical sense whatsoever.

Figure 7: Digitalisation Index Vs Tax-to-GSDP Ratio


(Source: Digitalisation Index Data taken from State of India Digital Economy Report 2024)
(Click on the image to Zoom)

From the above, we can say that India's direct tax geography is in motion, and the decisions made in the next five years will determine whether that motion becomes convergence or further concentration.

Devolution Paradox

The formula devised by the Finance Commission for horizontal devolution was specifically designed to address this sort of bias - more prosperous and more efficient states that collect more get fewer devolved funds, whereas less prosperous states get more. There is nothing wrong with the formula itself. What has gone wrong is that the chasm it needs to fill is growing at an increasing rate beyond what mere transfers can manage, since transfers take care of fiscal need but do not tackle fiscal capacity. Increased allocation to Bihar will not necessarily translate into making the Bihar economy taxable.

The Missing Instrumentality

This is not about increased redistribution. This is about investing in different ways, apart from redistribution, in the preconditions without which direct taxes cannot be levied in the first place.

The digital payments system in tier-3 cities, assistance in GST compliance for micro enterprises, formalisation of MSMEs and bringing proprietors into the formal economy.

These are not social schemes; they are investments of a supply-side fiscal nature, increasing the tax base of the country over ten years. They will relieve the burden that rests largely with the corridor states now. Every small enterprise that goes beyond the cash economy and into the formal economy in eastern UP or Odisha is one taxpayer in the making.

The Commission can make it clear that formalisation should not be considered as a development outlay but as fiscal infrastructure.

An Equation That Will Determine Where India Is Heading To

The 16th Finance Commission comes armed with a geography of direct tax collection that is even more lopsided and digitised to varying degrees than any of its predecessors. It has also been endowed with a trove of data about the current state of play in terms of direct tax collection - state-level numbers on formalisation, number of digital payments using UPI, percentage of companies complying with the GST, information gathered via AIS on income earned, which have never been available before, to help create an optimal devolution scheme that helps grow the tax base for tomorrow. States that are poised on the verge of making the jump into the formal economy don't require any special dispensations from the 16th Finance Commission. They need the conditions created to get across the line.

Formula for India’s Future

In 2035, India’s direct taxation landscape will be determined by decisions being taken now. While a Commission that examines the past can give a formula based on the past, a Commission that sees into the future and pushes forward with it can provide a formula for the future decade. This is what distinguishes a transfer formula from a growth formula. The 16th Finance Commission has a unique opportunity to do both.

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Seeding Tomorrow's Tax Base: The Formalisation Argument the Finance Commission Hasn't Made Yet

Every time a worker in Bengaluru makes his or her tax payment, some portion of it flows into the coffers of Delhi and is ultimately distribu...