By File720Online Editorial Team · July 18, 2026
The 4 Inputs Behind Every Form 720: EIN, IRS Numbers, Liability, and Quarter
Every Form 720 filing starts with the same four pieces of information. Understand what they are, where to find them, and why they matter — and the Quarterly Federal Excise Tax Return gets much easier.
Quick Answer
Every Form 720 requires four inputs: your Employer Identification Number (EIN — an SSN cannot be used), the IRS Number identifying each excise tax line you report, your tax liability for the period (a rate times quantity, or a percentage of the sales price), and the correct filing quarter. Returns are due April 30, July 31, October 31, and January 31.
Filing IRS Form 720 can feel simple until you reach a field you are unsure about. A missing EIN, the wrong IRS Number, an incorrect tax liability, or the wrong filing quarter can delay processing or lead to an IRS rejection. These are some of the most common issues businesses face, especially if they only file excise taxes a few times each year.
The good news is that every Form 720 filing starts with the same four pieces of information. Once you understand what they are, where to find them, and why they matter, completing your Quarterly Federal Excise Tax Return becomes much easier. This guide explains each required input in plain language, highlights common mistakes to avoid, and shows how preparing these details before you file can save time and reduce filing errors.
What Is IRS Form 720 and When Do You Need to File It?
IRS Form 720, officially called the Quarterly Federal Excise Tax Return, is used to report and pay certain federal excise taxes. Unlike income tax returns, which are typically filed once a year, Form 720 is generally filed every quarter by businesses responsible for collecting or paying specific excise taxes. These taxes apply to selected goods, services, and activities defined by the Internal Revenue Service. For a full overview of the form itself, see our guide to what Form 720 is.
The form is used by many different industries, from fuel suppliers and transportation companies to businesses that owe the Patient-Centered Outcomes Research Institute (PCORI) fee. Filing on time with accurate information helps businesses stay compliant and avoid unnecessary penalties.
What taxes are reported on Form 720?
Form 720 covers a variety of federal excise taxes. The taxes that apply depend on your business activities. Some of the most common excise taxes reported include:
- Fuel taxes
- Air transportation taxes
- Communications taxes
- Environmental taxes
- Indoor tanning services tax
- PCORI fee
- Certain manufacturer and importer excise taxes
Each tax category has its own IRS Number, which you will enter when completing the return.
Which businesses are required to file?
Businesses generally file Form 720 if they are responsible for collecting or paying one or more federal excise taxes. Depending on the tax type, filers may include:
- Fuel distributors and blenders
- Airlines and transportation businesses
- Indoor tanning service providers
- Manufacturers and importers of taxable products
- Employers and insurance providers responsible for the PCORI fee
- Other businesses subject to federal excise tax requirements
The filing requirement depends on your business activity, not your company size.
When you do not need to file Form 720
Many businesses never need to file Form 720 because they do not engage in activities subject to federal excise tax. If your business has no excise tax obligation, this return usually is not required. There are exceptions for certain situations, such as businesses filing a final return or organizations reporting the annual PCORI fee. Always review the IRS Form 720 instructions that apply to your specific tax category.
Quarterly filing timeline at a glance
| Quarter | Tax Period | Filing Deadline |
|---|---|---|
| First Quarter | January 1 – March 31 | April 30 |
| Second Quarter | April 1 – June 30 | July 31 |
| Third Quarter | July 1 – September 30 | October 31 |
| Fourth Quarter | October 1 – December 31 | January 31 (following year) |
If a deadline falls on a weekend or federal holiday, the IRS generally accepts the return on the next business day.
The Four Required Inputs Behind Every Form 720
Every Form 720 filer must provide four key pieces of information before submitting the return. These inputs tell the IRS who is filing, which excise taxes apply, how much tax is owed, and which reporting period the return covers.
Preparing these details before you begin can make the filing process much smoother and reduce the chance of errors that may delay IRS acceptance.
| Required Input | Why It Matters | Where You Will Find It |
|---|---|---|
| Employer Identification Number (EIN) | Identifies your business to the IRS | IRS EIN confirmation letter (CP 575) or previous federal tax returns |
| IRS Number (IRS No.) | Identifies the specific excise tax line being reported | Form 720 Parts I and II and the IRS Form 720 instructions |
| Tax Liability | Reports the amount of excise tax owed for the period | Business records — rate times quantity, or a percentage of the sales price |
| Filing Quarter | Identifies the three-month reporting period | Your accounting records and filing calendar |
Each of these inputs plays a different role in the filing process. Understanding them before completing Form 720 can help you file with greater confidence.
Input #1: Employer Identification Number (EIN)
The Employer Identification Number (EIN) is one of the first details you will enter on Form 720. Think of it as your business's federal tax identification number. The IRS uses it to match your return with your business records, making it one of the most important pieces of information on the form. Entering an incorrect EIN can prevent the IRS from properly identifying your business, which may delay processing or result in your return being rejected.
Why Form 720 requires your EIN
Your EIN connects every tax return, payment, and business record associated with your company. Whether you operate as a corporation, partnership, LLC, or another eligible business entity, the IRS relies on this number to process your excise tax return accurately. Without the correct EIN, your filing may not match your IRS account, even if every other section of the return is completed correctly.
Where to locate the correct EIN
If you are not sure where to find your EIN, check one of these documents:
- IRS EIN Confirmation Letter (CP 575)
- Previous federal tax returns
- Business tax documents
- IRS notices sent to your business
- Your IRS online business account, if available
Using an official IRS document helps avoid simple typing mistakes.
EIN vs. SSN: which one should you use?
Many first-time filers wonder whether they can enter a Social Security Number (SSN) instead of an EIN. The answer is no: Form 720 requires an EIN, and an SSN cannot be used in its place — even if you operate as a sole proprietor. If your business does not yet have an EIN, apply for one with the IRS (online or by submitting Form SS-4) before you file. The EIN is the only identification number the IRS accepts on this return.
Common EIN mistakes that trigger filing problems
Even small errors can create filing issues. Some common mistakes include:
- Entering an old or inactive EIN
- Typing one or more incorrect digits
- Using an owner's Social Security Number instead of the business EIN
- Filing under a different business name than the one associated with the EIN
- Using an EIN that belongs to another business entity
Taking a few moments to verify your EIN before filing can prevent unnecessary delays.
Input #2: Choosing the Correct IRS Number
After entering your EIN, the next step is selecting the correct IRS Number for the excise tax you are reporting. This is one of the most misunderstood parts of Form 720 because many businesses assume the IRS Number is the same as their EIN or another tax identification number. In reality, an IRS Number (abbreviated "IRS No." on the form) is the identifier printed next to each tax line in Parts I and II of Form 720 — it identifies the specific excise tax category being reported, not your business. Choosing the wrong one can result in an inaccurate filing, even if every other section of the form is completed correctly.
Before you begin your return, identify which excise tax applies to your business activity. If you are responsible for more than one excise tax, you will report each one on its own line, using its corresponding IRS Number.
What IRS Numbers represent
IRS Numbers are the line identifiers assigned to the different federal excise taxes listed on Form 720. They tell the IRS exactly which tax you are reporting and ensure your payment is applied correctly. For example, a business reporting fuel taxes uses different IRS Numbers than one reporting the annual PCORI fee (IRS No. 133). Because each number represents a different tax obligation, accuracy is essential.
Matching your business activity to the right IRS Number
The correct IRS Number depends on what your business does — not on your business type. For example:
- A company that sells taxable fuel reports fuel-related excise taxes.
- An employer sponsoring a self-insured health plan may need to report the PCORI fee.
- An indoor tanning business reports the indoor tanning services tax.
- Businesses involved in taxable air transportation report transportation excise taxes.
Reviewing the Form 720 instructions before filing helps confirm you are selecting the correct category.
Frequently used IRS Numbers explained
The table below highlights several IRS Numbers commonly reported on Form 720. Always refer to the latest IRS instructions to confirm the number that applies to your filing.
| IRS No. | Excise Tax Category | Typical Business |
|---|---|---|
| 133 | PCORI fee (Part II) | Self-insured health plan sponsors and health insurers |
| 140 | Indoor tanning services tax | Tanning salons |
| 26 | Transportation of persons by air | Airlines and air charter operators |
| 22 | Local telephone service (communications tax) | Telecommunications providers |
| 60 / 62 | Diesel fuel / gasoline | Fuel producers, distributors, and blenders |
| Multiple | Environmental taxes (calculated on Form 6627) | Chemical and petroleum manufacturers and importers |
Note: IRS Numbers and rates can change as tax laws are updated. Always use the current IRS Form 720 instructions for the filing period.
What happens if you report the wrong IRS Number?
Using the wrong IRS Number can create several problems, including:
- Reporting tax under the wrong category
- IRS processing delays
- Incorrect tax calculations
- Notices requesting corrections
- The need to file an amended return
A quick review before submitting your return can help avoid these issues.
Input #3: Reporting Your Tax Liability Correctly
Your tax liability is the amount of federal excise tax your business owes for the reporting period. This figure is based on your taxable activities during the quarter and is one of the most important values on Form 720. Many businesses confuse tax liability with the amount they pay when filing. While the two may be the same in some cases, they are not always identical. Your liability reflects the tax incurred during the quarter, while your payment may include deposits, credits, or adjustments.
What tax liability means on Form 720
Tax liability represents the total excise tax your business is responsible for during the reporting period. The amount depends on the type of taxable goods or services, the applicable tax rate, and the volume of taxable activity. Accurate reporting helps ensure your return matches your business records and reduces the risk of IRS questions later.
How to calculate liability
Most excise taxes on Form 720 are computed in one of two ways: a fixed rate multiplied by the quantity of the taxable item (for example, cents per gallon of fuel sold), or a percentage of the amount paid or sales price (for example, 10% of the amount paid for indoor tanning services). The method depends on the excise tax you are reporting. In general, you will need records showing:
- Taxable sales or transactions
- Applicable tax rates from the current IRS instructions
- Quantities sold or used
- Any exemptions allowed under IRS rules
Maintaining accurate records throughout the quarter makes this process much easier when it is time to file.
When Schedule A is required
Some businesses must complete Schedule A (Excise Tax Liability) to report semimonthly tax liability. This schedule is generally required for taxes that are subject to semimonthly deposit rules. If Schedule A applies to your business, make sure the liability reported on the schedule matches the amounts reported on Form 720.
How credits or adjustments affect reported liability
Certain businesses may qualify for allowable credits or adjustments under IRS rules. These can affect the final amount reported on Form 720. Examples include:
- Approved credits claimed on Schedule C
- Adjustments for prior reporting periods
- Refund claims in qualifying situations
Supporting documentation should always be retained for your records.
Common liability calculation errors
Calculation mistakes are a common reason businesses need to correct previously filed returns. Some of the most frequent errors include:
- Using outdated tax rates
- Reporting incorrect transaction totals
- Forgetting eligible adjustments
- Entering liability in the wrong section
- Arithmetic errors
Reviewing your calculations before filing helps reduce the chance of mistakes.
Input #4: Selecting the Correct Filing Quarter
Every Form 720 covers a specific three-month reporting period. Selecting the correct quarter ensures your tax liability is reported for the right timeframe and helps the IRS match your return with your payment records. Choosing the wrong quarter is a simple mistake, but it can lead to processing delays or require an amended filing.
Understanding Form 720 tax periods and due dates
The IRS divides Form 720 into four reporting periods each calendar year. Most returns are due by the last day of the month following the end of each quarter.
| Quarter | Reporting Period | Filing Deadline |
|---|---|---|
| First Quarter | January 1 – March 31 | April 30 |
| Second Quarter | April 1 – June 30 | July 31 |
| Third Quarter | July 1 – September 30 | October 31 |
| Fourth Quarter | October 1 – December 31 | January 31 (following year) |
Your return should include only taxable activities that occurred during the selected quarter. Submitting your return on or before the deadline helps avoid late filing penalties and interest.
How to determine the correct reporting period
The reporting period should match your business records. Before filing, compare your accounting records, sales reports, and taxable transactions to ensure they all fall within the same quarter. If your business reports more than one excise tax, verify that each taxable activity belongs to the reporting period you are filing.
What if you file for the wrong quarter?
If you accidentally submit Form 720 for the wrong quarter, you may need to correct the filing with the IRS. Acting quickly can help reduce additional penalties or processing delays. If you discover the error before submitting, simply update the reporting period. If the return has already been accepted, corrections are generally made on Form 720-X, the amended quarterly federal excise tax return.
Supporting Forms That May Be Required With Form 720
Depending on the excise taxes you report, Form 720 may need to be filed with one or more supporting schedules or related forms. These documents provide additional details that the IRS uses to verify tax calculations, deposits, credits, or specific transactions. Not every filer needs every schedule — the forms you include depend on your tax category and reporting requirements.
Schedule A (Excise Tax Liability)
Reports semimonthly excise tax liability for taxes subject to deposit requirements. If your excise taxes require semimonthly deposits, Schedule A shows the IRS how liability was incurred throughout the quarter, and its totals must match the amounts reported on Form 720.
Schedule C (Claims)
Used to claim credits for certain excise taxes, such as fuels used in nontaxable ways. Businesses eligible for credits should complete Schedule C and keep documentation supporting each claim.
Schedule T (Two-Party Exchange Information)
Applies to businesses involved in taxable fuel transactions. It reports fuel received in or delivered within a terminal in two-party exchanges, helping the IRS track fuel excise tax reporting.
Form 6627 (Environmental Taxes)
Calculates environmental excise taxes, including taxes on petroleum, certain chemicals, imported chemical substances, and ozone-depleting chemicals. The completed form is attached to Form 720 when required.
Form 720-X (Amended Quarterly Federal Excise Tax Return)
If you discover an error after your return has been accepted, Form 720-X lets you adjust or correct a previously filed Form 720 for eligible excise taxes.
Understanding which schedules apply before you begin filing can help you submit a complete and accurate return, reducing the chance of delays or IRS follow-up requests.
Special Filing Situations You Should Know
Most businesses can complete Form 720 by entering the required information and submitting their return. However, certain filing situations require extra attention. Understanding these scenarios before you file can help you stay compliant and avoid unnecessary corrections later.
Filing a zero-liability return
Some businesses may have previously filed Form 720 but have no excise tax liability for the current quarter. Whether you need to file a return depends on your specific filing requirement and the type of excise tax involved. For example, if you indicated that your previous return was your final return, you generally will not need to continue filing future quarterly returns unless your filing obligation changes. If you are unsure whether a zero-liability return is required, review the latest IRS instructions for your excise tax category.
Final return
If your business no longer has a federal excise tax filing requirement, you can indicate that the return you are submitting is your final return. This tells the IRS that you do not expect to file additional Form 720 returns for that tax obligation. Before marking a return as final, confirm that:
- Your excise tax activity has ended.
- All outstanding tax liabilities have been reported.
- Any required payments have been made.
Selecting "Final Return" incorrectly may lead to unnecessary IRS correspondence if your business later becomes subject to excise tax again.
PCORI fee reporting
Many employers and health plan sponsors file Form 720 once each year to report the Patient-Centered Outcomes Research Institute (PCORI) fee. Although Form 720 is generally a quarterly return, the PCORI fee follows its own annual reporting requirement — it is reported on the second-quarter return, due July 31 each year. Businesses responsible for the PCORI fee should:
- Calculate the average number of covered lives using an IRS-approved method.
- Report the fee using the appropriate IRS Number (IRS No. 133).
- File by the applicable annual due date.
Because PCORI filing requirements can change over time, always review the latest IRS guidance before submitting your return.
First-time filers
If this is your first Form 720 filing, gathering your information before starting can make the process much easier. You will typically want to have:
- Your Employer Identification Number (EIN)
- Business legal name and address
- Records of taxable transactions
- The correct IRS Number for each excise tax
- Liability calculations for the reporting period
- Any required supporting schedules
Taking a few minutes to organize these details helps reduce errors during filing.
Amending a previously filed Form 720
Mistakes happen. If you discover an error after your return has already been accepted, you may be able to correct it using Form 720-X, depending on the type of adjustment required. Common reasons businesses amend a return include:
- Reporting the wrong excise tax category
- Entering an incorrect tax liability
- Claiming a missed credit
- Correcting previously reported information
Correcting an error as soon as it is identified can help limit additional interest or penalties.
Filing Form 720 Online: Why More Businesses Choose E-Filing
Electronic filing has become the preferred option for many businesses because it is faster, more convenient, and helps reduce common filing errors. Instead of completing paper forms and mailing documents to the IRS, businesses can submit their returns electronically and receive confirmation once the return has been processed. For companies that file Form 720 regularly, e-filing also makes it easier to maintain organized records and prepare future quarterly returns.
Faster IRS processing
Paper returns require mailing time and manual processing. Electronic filing sends your return directly through an approved system, eliminating mailing delays, reducing paperwork, and providing quicker submission confirmation.
Built-in error checks
Many electronic filing platforms validate your return before submission, catching missing required information, invalid EIN formats, incomplete fields, and basic calculation errors before the IRS ever sees them.
Faster acknowledgments
After an electronically filed return is accepted for processing, you typically receive an acknowledgment confirming the IRS has received your submission — peace of mind and a clear record of your filing.
Secure payments and digital records
Eligible users can submit payment information securely during the filing process, and digital records stay organized for future returns or IRS inquiries.
Preparing Form 720 is much easier when your filing platform helps you catch errors before submission. File720Online provides a simple online filing experience that lets businesses prepare and electronically file Form 720 securely — enter your key filing information, review the return for common errors, and receive IRS acknowledgment after submission.
Final Thought
Every successful Form 720 filing begins with four essential inputs: your Employer Identification Number (EIN), the correct IRS Number, an accurate tax liability, and the proper filing quarter. Taking the time to verify each of these details before submitting your return can help reduce errors, prevent processing delays, and keep your business compliant with IRS requirements.
Whether you are filing for the first time or preparing quarterly excise tax returns on a regular basis, organizing your information in advance makes the process much smoother. If you are looking for a faster and simpler way to submit your return, File720Online offers a secure online filing solution that helps you prepare, review, and e-file Form 720 with confidence while receiving IRS acknowledgment after successful submission.
Frequently Asked Questions
Can I use my Social Security Number instead of an EIN on Form 720?
What is an IRS Number on Form 720?
When is Form 720 due each quarter?
How do I calculate my Form 720 tax liability?
What happens if I file Form 720 for the wrong quarter?
Do I have to file Form 720 if I have no excise tax liability this quarter?
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