Fill out and Verify Form 1040 with Instafill.ai

Worried about filling PDFs wrong? Instafill securely fills and verifies 1040-2023 forms, ensuring each field is accurate.
#1 AI PDF Filling Software of 2024
3 out of 4 customers say they prepare their Form 1040 forms in 37 seconds or less
Secure platform for your PDF forms and personal information
main-image

Form 1040, U.S. Individual Income Tax Return free printable template

Fill out Form 1040-2023 ✨Coming soon✨
Verify Form 1040-2023 ✨Coming soon✨
Not filled your Form 1040 yet?
Click here to automatically fill
Already have your Form 1040 filled?
Click here to Verify
for errors

Instafill Demo: filling out a legal form in 27 seconds

Compliance Form 1040
Validation Checks by Instafill.ai

1
Taxpayer Name Validation
Ensures that the taxpayer's first name, middle initial, and last name are correctly entered as per their Social Security card. The software cross-references the provided names with the Social Security Administration's records to ensure accuracy. Any discrepancies are flagged for review. This validation is crucial to prevent issues with identity and to ensure that the tax return is attributed to the correct individual.
2
Social Security Number Validation
Confirms that the taxpayer's Social Security Number (SSN) is valid and correctly formatted. The software checks the SSN against the standard 9-digit format and validates it against government databases. This step is essential to prevent fraud and to verify the taxpayer's identity. Incorrect or invalid SSNs are highlighted for correction.
3
Spouse Information Validation
Verifies that the spouse's information is accurately provided, including first name, middle initial, last name, and SSN if filing a joint return. The software ensures that the spouse's details match official records and are consistent with the taxpayer's information. This validation is particularly important for joint returns to ensure both parties are correctly identified and responsible for the tax obligations.
4
Home Address Validation
Checks that the home address is complete, including apartment number if applicable, and correctly formatted for domestic or foreign addresses. The software validates the address against postal service standards to ensure deliverability of tax-related correspondence. It also confirms that the address matches the one on file with the IRS, which is important for maintaining accurate taxpayer records.
5
Filing Status Validation
Validates the selection of the appropriate filing status and that any additional required information, such as spouse's name for 'Married filing separately', is included. The software reviews the filing status for consistency with the information provided on the tax return. It also ensures that the correct tax rates and standard deductions are applied based on the filing status, which affects the calculation of the taxpayer's liability.
6
Presidential Election Campaign fund contribution indication
Ensures that the taxpayer's decision regarding the Presidential Election Campaign fund contribution is clearly indicated on the form. The AI checks if the appropriate box is marked to reflect the taxpayer's choice to allocate funds to this program. It verifies that no conflicting information is present and alerts the user if the selection is missing or unclear.
7
Digital asset transactions declaration
Verifies the response to the question about digital asset transactions during the year is marked as 'Yes' or 'No'. The AI confirms that this mandatory question is not overlooked and that the taxpayer's answer is properly recorded on the form. It also ensures that the response is consistent with other reported financial information.
8
Standard deduction accuracy
Ensures that the standard deduction section is completed correctly, considering if someone can claim the taxpayer or their spouse as a dependent. The AI cross-references the taxpayer's filing status and age to determine the correct standard deduction amount and checks for any discrepancies in the reported figures.
9
Age/blindness deductions eligibility
Checks if the taxpayer or spouse is eligible for age/blindness deductions by verifying birth dates and blindness status. The AI calculates the eligibility for additional deductions based on age or blindness and ensures that these deductions are accurately reflected in the tax calculations.
10
Dependents' information accuracy
Validates that all dependents' information is accurately listed, including names, Social Security numbers, relationships, and eligibility for credits. The AI reviews the dependents' details for completeness and accuracy, checking for any inconsistencies or missing information that could affect tax credits and deductions.
11
Income Source Reporting
Ensures that all income sources are accurately reported on the U.S. Individual Income Tax Return. This includes the requirement to attach Form(s) W-2 and any other relevant income documentation. The AI verifies that the total income is correctly calculated by cross-referencing the provided documents and the figures entered on the form. It also checks for consistency and completeness in the income reporting section.
12
Adjusted Gross Income Calculation
Confirms that adjustments to income from Schedule 1 are correctly reported on the U.S. Individual Income Tax Return. The AI reviews each entry for accuracy and ensures that the adjusted gross income (AGI) is accurately calculated based on these adjustments. It also validates that any necessary supporting documentation is attached and that the AGI is consistent with the reported income and adjustments.
13
Deductions Verification
Verifies that the standard or itemized deductions on the U.S. Individual Income Tax Return are correctly entered. The AI checks that the taxpayer has chosen the most beneficial option between standard and itemized deductions and confirms the accuracy of the qualified business income deduction if applicable. It also ensures that all deductions are properly documented and calculated.
14
Tax and Credits Accuracy
Checks that the tax and credits sections of the U.S. Individual Income Tax Return are accurately completed. The AI calculates the total tax liability and applies any eligible credits to determine the correct tax amount owed or refund due. It also ensures that any tax credits claimed are supported by the appropriate documentation and that the calculations comply with current tax laws and regulations.
15
Payment Information Confirmation
Confirms that all payment information on the U.S. Individual Income Tax Return is correctly reported. This includes verifying federal income tax withheld amounts, estimated tax payments made during the year, and any refundable credits. The AI cross-references payment information with the taxpayer's records to ensure accuracy and completeness in the reporting of payments and credits.

Common Mistakes in Completing Form 1040

Providing an incorrect or missing Social Security Number (SSN) on the U.S. Individual Income Tax Return can lead to processing delays and potential issues with your tax account. To avoid this mistake, double-check the SSN against your Social Security card before submitting the form. Ensure that all digits are correct and clearly legible. If you have recently changed your name, for example, due to marriage or divorce, make sure that the Social Security Administration has been notified to avoid discrepancies.

Selecting the wrong filing status is a common error that can affect the tax benefits you receive. Review the definitions and qualifications for each status carefully before making a selection. If you are unsure about which status to choose, consult the IRS guidelines or a tax professional. Remember that your filing status can change from year to year, so do not assume it is the same as the previous year without verifying.

Failing to provide complete and accurate information on dependents can result in the loss of valuable tax credits and exemptions. Ensure that you include the full name, SSN, and relationship to you for each dependent. Verify that the information matches the records of the Social Security Administration. Additionally, be aware of the criteria for claiming someone as a dependent, as this can affect eligibility for certain tax benefits.

Not reporting all sources of income can lead to penalties and interest on unpaid taxes. Make sure to include all income received during the year, such as wages, interest, dividends, and freelance earnings. Gather all relevant documents, such as W-2s, 1099s, and bank statements, before filling out your tax return. If you are unsure whether a source of income is taxable, consult the IRS guidelines or a tax advisor.

Errors in calculating total income can result in an incorrect tax liability or refund amount. Use a calculator or tax software to ensure accuracy when adding up your income. Double-check your math and the figures you enter on the form. If you are using a paper form, consider having a second person review your calculations. For complex tax situations, it may be beneficial to seek assistance from a tax professional.

Miscalculating AGI can lead to an incorrect tax liability or refund amount. It is crucial to carefully sum up all sources of income and apply the necessary adjustments as outlined in the tax form instructions. Taxpayers should double-check their math and consider using tax preparation software or consulting with a tax professional to ensure accuracy. Keeping meticulous financial records throughout the year can also simplify the calculation process.

Failing to claim eligible tax credits is a common oversight that can result in paying more tax than necessary. Taxpayers should review the list of available tax credits and evaluate which ones they may qualify for, such as education credits, child tax credit, or earned income tax credit. It is advisable to read the eligibility requirements for each credit carefully and maintain records that support the claim. Consulting a tax professional can also help identify credits that may be overlooked.

Choosing incorrectly between standard and itemized deductions can affect the tax outcome. Taxpayers should compare the total amount of itemized deductions to the standard deduction amount to determine which option is more beneficial. It is important to keep receipts and records of deductible expenses throughout the year. Tax preparation software or a tax professional can assist in making the correct decision and calculating the deductions accurately.

Omitting necessary attachments such as the W-2 or other tax forms can delay processing and result in errors in reported income or tax withholding. Taxpayers should ensure that all required forms are attached to the tax return before submission. It is helpful to use a checklist when preparing the tax return to verify that all documents are included. Electronic filing is also an option that can reduce the likelihood of forgetting to attach documents.

A tax return without the required signatures and dates is considered incomplete and can lead to processing delays. Taxpayers must sign and date their returns to validate the information provided. If filing jointly, both spouses must sign. Before mailing or electronically submitting the tax return, a final review should be conducted to ensure that all signature lines are properly completed. Setting aside time to carefully review the return before submission can prevent this error.

Entering incorrect banking information can delay the refund process or result in a lost refund. Taxpayers should double-check their bank account and routing numbers for accuracy before submitting their tax return. It is advisable to refer to a check or bank statement for the correct numbers. If direct deposit is selected, ensure that the account is active and able to receive deposits.

Failing to check the box for age or blindness if eligible can lead to a missed opportunity for a higher standard deduction. Taxpayers who are 65 or older or who are legally blind should review their eligibility criteria and ensure they check the appropriate box(es) on their tax return. This can be verified by reading the instructions for the standard deduction and consulting with a tax professional if necessary.

With the increasing prevalence of digital assets, it is essential to report any transactions involving cryptocurrencies or other digital assets as required by the IRS. Taxpayers should maintain records of all digital asset transactions throughout the year and accurately report any gains or losses. It is recommended to use tax software or consult with a tax professional who is knowledgeable about digital asset taxation to ensure compliance.

Incorrectly reporting the amount of tax already paid through withholdings or estimated tax payments can result in an inaccurate tax liability calculation. Taxpayers should carefully review their W-2 and 1099 forms, as well as records of any estimated tax payments made during the year. It is important to enter the correct amounts on the tax return to avoid underpayment or overpayment of taxes.

Some taxpayers may overlook the option to contribute to the Presidential Election Campaign fund. This does not increase the filer's tax liability or reduce their refund, as it is a way to allocate government funds to eligible presidential candidates. To participate, taxpayers should check the box on their tax return to designate $3 to the fund. While this is not a mistake that affects a taxpayer's return, it is an option that taxpayers should be aware of.

The occupation field is a required part of the U.S. Individual Income Tax Return and should accurately reflect the taxpayer's current or most recent job. Neglecting to fill in this field can lead to unnecessary delays in processing the return. Taxpayers should ensure they enter their occupation clearly and concisely. If the taxpayer is retired or not currently employed, it is recommended to state 'Retired' or 'Not Employed' in the occupation field.

If a professional tax preparer completes the tax return, it is mandatory to include their information in the designated preparer section. Omitting this information can result in an incomplete return and potential issues with the IRS. Taxpayers should double-check that the preparer's name, PTIN, firm's name (if applicable), and contact information are correctly entered. It is also important to ensure that the preparer signs the return to validate its authenticity.

Taxpayers who want to authorize another person to discuss their tax return with the IRS must indicate a third party designee on their Form 1040. Failure to do so can prevent the designated individual from providing assistance or obtaining necessary information. To avoid this, taxpayers should complete the 'Third Party Designee' section by providing the designee's name, phone number, and personal identification number (PIN). This authorization is particularly useful if the taxpayer expects to need help with tax-related questions.

The IRS may need to contact the taxpayer for additional information or clarification, making it crucial to provide a current phone number and email address. Neglecting to include this contact information can lead to delays in the processing of the tax return. Taxpayers should verify that the phone number and email address are entered correctly and are up to date. It is also advisable to write legibly or type the information to prevent misinterpretation of the contact details.

Maintaining a copy of the completed tax return is important for the taxpayer's records and future reference. It is essential in case of audits, amendments, or to help prepare future tax returns. Taxpayers should ensure they have a secure copy, either in digital or printed form, before submitting the original to the IRS. It is recommended to store the copy in a safe place and consider backing up digital copies to avoid data loss.
Saved over 80 hours a year

“I was never sure if my IRS forms like W-9 were filled correctly. I'm able to Verify already filled forms without any external help now.”

Kevin Martin Green

Your data stays secure with advanced protection from Instafill and our subprocessors

Robust compliance program

Transparent business model

You’re not the product. You always know where your data is and what it is processed for.

ISO 27001, HIPAA, and GDPR

Our subprocesses adhere to multiple compliance standards, including but not limited to ISO 27001, HIPAA, and GDPR.

Security & privacy by design

We consider security and privacy from the initial design phase of any new service or functionality. It’s not an afterthought, it’s built-in.

Fill out and Verify Form 1040 with Instafill.ai

Worried about filling PDFs wrong? Instafill securely fills and verifies 1040-2023 forms, ensuring each field is accurate.