The IRS (Internal Revenue Service) is the tax agency of the U.S. government.
It collects money (taxes) from people and businesses to help fund public services such as roads, schools, the military, and healthcare.
It’s a bureau of the U.S. Department of the Treasury and plays a crucial role in the financial operations of the country. In short, the IRS is responsible for,
- Collecting federal taxes
- Enforcing tax laws
- Helping people file their taxes
- Giving tax refunds to people who paid too much
Who Collects Federal Tax?– The Internal Revenue Service (IRS), on behalf of the U.S. federal government.
How Does Federal Tax Is Used?– The U.S. federal government uses these collected tax money to fund things like,
- Social Security and Medicare
- National defence (military)
- Education and infrastructure
- Scientific research and disaster relief
Types Of Federal Taxes
- 💸 Income tax (taken from your pay-check or paid annually)
- 💳 Corporate tax (paid by businesses)
- 🔬 Payroll taxes (for Social Security and Medicare)
- 🍻 Excise taxes (on goods like fuel, tobacco, or alcohol)
So, when you hear “federal tax” think of it as your contribution to the running of the entire country.
Historical Background of IRS
The IRS began in 1862 when President Abraham Lincoln created the office of the Commissioner of Internal Revenue to help fund the American Civil War by introducing the country’s first income tax.
Over the years, it went through many changes and updates. One major reform happened in the 1990s. In 1953, it officially became known as the Internal Revenue Service (IRS).
Here’s a simple historical background of the IRS (Internal Revenue Service) in the United States:
Born During the Civil War
- The IRS began during the American Civil War.
- President Abraham Lincoln and Congress created the first income tax in 1862 to help pay for the war.
- A new department called the Commissioner of Internal Revenue was formed — this was the early version of today’s IRS.
The first income tax was 3% on income over $800/year. It helped the government raise money quickly.
First Income Tax Ends
The war ended, and so did the temporary income tax. The government stopped collecting income tax for a while.
Income Tax Becomes Permanent
- The U.S. passed the 16th Amendment to the Constitution in 1913.
- This gave the government the power to collect income tax from all citizens.
- The modern IRS system started after this law.
IRS Gets Its Name
The agency was officially renamed to Internal Revenue Service (IRS) in 1953. It became more organized and started using machines to help with taxes.
Reforms In IRS
In 1998, the IRS was restructured to become more customer-friendly. It focused on helping taxpayers, reducing mistakes, and digitising tax returns (like e-filing).
Technology & E-Filing
The IRS handles hundreds of millions of tax returns every year.
It runs systems like,
- Direct Deposit (for refunds)
- IRS Free File,and
- Online Payment portals.
It also fights tax fraud, helps during natural disasters, and supports people with stimulus payments (like during COVID-19).
Summary in Simple Points
Year | What Happened |
---|---|
1862 | First U.S. income tax created |
1872 | First U.S. income tax ended |
1913 | 16th Amendment – permanent income tax starts |
1953 | Name officially changed to IRS |
1998 | IRS restructured to help people more |
Today | First U.S. income tax created |
Structure and Oversight
The IRS is led by the Commissioner of Internal Revenue, who is appointed to a five-year term by the President of the United States.
The IRS is organised into four main operating divisions to serve different groups of taxpayers:

Each one is created to support specific groups of taxpayers, offering customized services and focused compliance efforts. Here’s a breakdown of each,
Small Business or Self-Employed (SB/SE)
🎯 Focus: This division helps a wide range of taxpayers, such as small businesses (usually with assets under $10 million), self-employed individuals like sole proprietors, freelancers, and gig workers. It also supports partnerships, S-corporations, and people who earn income from rental properties or farming.
Responsibilities
- Assisting small businesses and self-employed individuals in understanding and meeting their tax responsibilities, such as income tax, employment taxes, and excise taxes.
- Offering guidance, tools, and outreach to support this group of taxpayers.
- Handling issues related to proper reporting, payments, and filing of taxes.
- Carrying out audits and reviews for small business and self-employed tax returns.
- Enforcing rules under the Bank Secrecy Act to help prevent financial crimes like money laundering.
🔑 Key Characteristics: The Small Business or Self-Employed division handles the more complex tax issues of business income, expenses, and employment taxes. These situations usually need more detailed guidance and stricter compliance than the simpler tax needs of regular wage earners.
Large Business and International (LB&I)
🎯 Focus: This division manages tax matters for the largest and most complex taxpayers. It handles both U.S. and foreign businesses that have to report taxes in the U.S. and have assets of $10 million or more. It also deals with high-wealth individuals and complicated international tax issues.
Responsibilities
- Making sure large corporations, multinational companies, and high-income individuals follow tax laws.
- Handling complicated tax matters like international transactions, transfer pricing, and tax treaty issues.
- Acting as the U.S. Competent Authority, managing tax agreements with other countries to help taxpayers avoid being taxed twice on the same income.
- Performing detailed audits and reviews of large and complex financial entities.
- Using data analysis and risk tools to spot potential areas where taxes may not be reported or paid correctly.
🔑 Key Characteristics: LB&I handles complex financial setups and international transactions, which require deep knowledge of global tax laws and corporate finance. Their work often involves large sums of money and detailed legal analysis.
Tax-Exempt and Government Entities (TE/GE)
🎯 Focus: This division focuses on a unique group of taxpayers who are generally exempt from certain federal taxes. It includes,
- Employee Plans: Covers retirement plans like pensions, 401(k)s, IRAs, and related trusts, as well as the individuals who participate in these plans and the employers who sponsor them.
- Exempt Organisations: Includes groups such as charities, religious and educational institutions, private foundations, social welfare organisations, labor unions, business leagues, and others that are exempt from income tax under Section 501 of the Internal Revenue Code.
- Government Entities: Involves federal, state, local, and Indian tribal governments.
Responsibilities
- Offering guidance and education to organisations on their unique tax responsibilities and compliance rules.
- Reviewing applications from groups seeking tax-exempt status.
- Carrying out examinations to make sure these organisations follow the laws related to tax-exempt status, unrelated business income, and employee benefit plans.
- Encouraging voluntary compliance through outreach and support programs.
- Working closely with other government agencies, such as the Department of Labor and the Pension Benefit Guaranty Corporation.
🔑 Key Characteristics: TE/GE works to make sure that tax-exempt organizations and government entities follow the specific laws and rules that apply to them. This helps protect the fairness and integrity of the tax system for these special types of organizations.
These four divisions allow the IRS to categorise and manage its vast taxpayer base more effectively, providing specialised services and enforcement efforts where they are most needed.
Also, a group called the IRS Oversight Board, made up of nine independent members, helps make sure the IRS is doing its job well and serving the public properly.
This board acts like a watchdog. It checks how the IRS is working, gives advice, and makes sure the agency stays focused on helping taxpayers and running efficiently.
Functions of IRS
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① Tax Collection
It collects taxes from individuals and businesses. This includes income tax, corporate tax, estate tax and many more.
Whether you use tax software, a professional, or file directly with the IRS (e.g., through IRS Direct File), your tax return ultimately goes to the IRS.
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② Tax Returns
People and companies file tax returns every year to report their income. The IRS checks if they paid the right amount of tax.
You might make payments for taxes owed, estimated taxes, or payment plans directly to the IRS.
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③ Refunds
If someone paid more tax than needed by mistake, then the IRS has a criteria of giving that person or entity a refund of the extra amount received by them.
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④ Audits
The IRS can check (audit) your tax return to make sure it’s correct. While not common for most taxpayers, the IRS does conduct audits to verify the accuracy of tax returns.
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⑤ Online account
The IRS offers an online account for individuals to access tax records, view payment history, and manage payment plans.
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⑥ Support
The IRS sends notices and letters for various reasons, such as inquiries about your tax return or a balance due.
The IRS also helps people in understanding taxes by offering tools, guides, and services on their official website.
Key Dates: April 15 is usually considered the deadline to file income tax returns, every year.
How Do People Pay Taxes?
Once a year, usually before April 15, people fills out a form known as tax return to tell the IRS, how much money they earned and paid in the transactions.
- If any person or entity paid too much, the IRS sends them a refund.
- If any person or entity paid too little, the IRS have to pay the difference.
What If You Don’t Pay Taxes?
If you don’t pay your taxes on time or tries to commit any kind of tax fraud, then IRS can
- Send letters asking for payment
- Add extra penalties or interest
- Take money from your bank if needed (this is rare but legal)
Website and Help
You can go through the direct link given below, to visit the official website of Internal Revenue Service (IRS)
Official Website | irs.gov |
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Also, from this website you can:
- Get Your Refunds Status
- File Tax Returns
- Get Extension Dates
- Explore Free Filing Options
- Ask Questions about Amended Returns
- Get an Identity Protection Pin
- Get your Tax Records
- Apply for an Employer ID Number (EIN)
- Find Forms and Instructions
- Resolve an Issue
You can also access this website in different languages and can also visit the related websites from the links available in the website
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