There is no single official figure called “G20 spending” globally, so the answer depends on what exactly you mean by “how much money spend in G20”: hosting a summit, or spending by G20 countries as a group.

Below are the two main ways people usually talk about “G20 spending,” plus what we know from public data and reports.

1. If you mean “how much did a country spend to host a G20 summit?”

Every G20 presidency decides its own budget for hosting the summit (venues, security, city beautification, logistics, media, etc.), and these costs vary widely. They are not centrally published in one global database, but some countries’ figures get reported in budgets, parliament answers, and news. A widely discussed recent example is India’s G20 summit in 2023 (New Delhi) :

  • India’s initial union budget allocation for G20-related expenses in 2023–24 was about ₹990 crore (close to ₹10 billion).
  • Opposition parties and several media/forum pieces claimed that actual spending was around ₹4,100 crore (₹41 billion) , roughly four times the original budgeted amount, especially after including Delhi’s beautification, roads, lighting, security and other urban works linked to the summit.
  • These higher figures are often based on adding multiple line items: central G20 budget, city/state-level works, and related infrastructure that were timed for G20.

Because each country structures and reports spending differently, there is no single “how much money spend in G20” number that covers all host countries and all years; you have to look country by country and summit by summit.

2. If you mean “how much money do G20 countries spend overall?”

The G20 is a group of major economies , not a government with its own big central budget. There is no giant common spending pot like the G20 “spending its own money.” Instead:

  • Each G20 member has its own government spending (health, education, defense, infrastructure, etc.), and those national figures are tracked individually.
  • Data platforms like Trading Economics publish separate tables for government spending and government budget balances for G20 countries (for example: the Euro Area, India, Japan, the US, and others all list their government expenditure in their own currencies).
  • Taken together, G20 members account for about 80% of global GDP and a similarly large share of global public spending, but there is no official single “G20 total spending” number regularly published as one figure; it’s essentially the sum of all members’ budgets.

So if the question is “how much money is spent in the G20 as a whole,” the realistic answer is: many tens of trillions of dollars per year in combined national government spending , but you would need to add up each country’s budget for a precise current total.

3. Another angle people talk about: G20 spending on specific things

Sometimes “G20 spending” refers to how much G20 members spend on a specific sector or policy , for example:

  • Fossil fuel support : An analysis of 2022 data found that G20 members spent around 1.4 trillion USD in one year on fossil fuel support/subsidies.
  • Similar thematic estimates exist for climate finance, infrastructure, or social protection , but again, those are aggregates of national policies , not money controlled by a single G20 institution.

These topic-based numbers are useful to understand priorities (like how much G20 puts toward fossil fuels vs. green transition), but they are not the same as a “G20 budget.”

4. Why there isn’t one clean “G20 spending” number

Key reasons you won’t find one neat figure:

  • No single treasury : The G20 has a small coordination and logistics apparatus around the rotating presidency, but no big unified budget like the EU’s. Most money is spent by national governments.
  • Different accounting : Countries report spending with different categories and currencies; aggregating requires converting and harmonizing data.
  • Summit vs. broader spending : “G20 spending” can mean one year’s summit costs , or member-country policies in a certain area (like fossil fuel support), or total national budgets of all G20 members combined. These are very different scales (hundreds of millions or a few billion for a summit, versus trillions for sectoral or total budgets).

5. Quick forum-style answer

If you’re asking “how much money spend in G20,” there isn’t a single global number. The G20 itself doesn’t run a huge common budget; it’s a club of big economies that each spend their own money. Hosting a G20 summit can run into the billions of local currency (India’s 2023 summit is widely reported around ₹4,100 crore when you include city works), while total government spending by all G20 countries combined is in the tens of trillions of dollars per year.

TL;DR:

  • There is no official single “G20 spending” number.
  • Summit hosting can cost billions in local currency (for example, estimates around ₹4,100 crore for India’s 2023 presidency when adding beautification and infrastructure).
  • G20 countries together spend tens of trillions per year through their own national budgets, and in 2022 they collectively spent about 1.4 trillion USD just on fossil fuel support.

Information gathered from public forums or data available on the internet and portrayed here.