---
title: "Tax-to-GDP Ratio: Definition & Why It Matters"
description: "The tax-to-GDP ratio measures total tax revenue as a percentage of GDP, highlighting fiscal capacity differences, especially between India and OECD countries."
url: "https://modeldiplomat.com/learn/glossary/tax-to-gdp-ratio"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The tax-to-GDP ratio measures a government's total tax revenue as a percentage of its gross domestic product over a fiscal year.
- Why is India's tax-to-GDP ratio low compared with OECD economies?
- How does the tax-to-GDP ratio differ from the fiscal deficit?
- Does GST raise India's tax-to-GDP ratio?
- Which denominator should be used—gross or net tax revenue?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

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In the Union Budget 2023–24 presented by Finance Minister Nirmala Sitharaman, India's central gross tax-to-GDP ratio was projected at roughly 11.1 percent, well below the OECD average near 34 percent.

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