Indiana Sales Tax Exemption Certificate Form ST-105
This form serves as the General Sales Tax Exemption Certificate for qualified purchasers in Indiana. It is essential for businesses making exempt purchases, allowing them to refrain from paying sales tax on specific items. Complete the form accurately to ensure valid exemption and compliance with Indiana tax laws.
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How do I fill this out?
To fill out the ST-105 form, start by providing the necessary identification information, including your Indiana Retail Merchant's Certificate. Then specify the items to be purchased under the exemption, along with the type of exemption being claimed. Ensure that all sections are completed to avoid any issues with sales tax billing.

How to fill out the Indiana Sales Tax Exemption Certificate Form ST-105?
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Step 1: Enter your Indiana Registered Retail Merchant's Certificate TID and LOC numbers.
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Step 2: Specify the type of exemption you are claiming for the purchase.
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Step 3: Describe the items being purchased in detail.
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Step 4: Complete all required information sections in the form.
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Step 5: Submit the form to the seller to validate your tax-exempt purchase.
Who needs the Indiana Sales Tax Exemption Certificate Form ST-105?
1
Retailers who purchase goods for resale need this form to avoid paying sales tax.
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Nonprofit organizations purchasing items for exempt purposes must fill out this certificate.
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Agricultural producers buying supplies for farm production benefit from this exemption.
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Government units in Indiana use this form to buy goods or services exempt from sales tax.
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Businesses providing services requiring equipment can claim exemption with this certificate.
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What are the instructions for submitting this form?
To submit the ST-105 form, ensure all required fields are accurately filled. You may provide the completed form to the seller during your purchase transaction. For inquiries or further instructions, contact your local Indiana Department of Revenue office or check their official website for guidance.
What are the important dates for this form in 2024 and 2025?
Keep an eye on updates from the Indiana Department of Revenue for any changes in January 2024. For 2025, no significant changes are expected. Stay informed to ensure compliance with tax requirements.

What is the purpose of this form?
The Indiana Sales Tax Exemption Certificate, Form ST-105, is essential for purchase exemptions from sales tax under Indiana law. Businesses, retailers, nonprofits, and governmental entities can utilize this certificate to ensure that their qualified purchases are exempt from sales tax liability. By capturing necessary information accurately, purchasers can avoid unnecessary tax payments and streamline their buying processes.

Tell me about this form and its components and fields line-by-line.

- 1. Purchaser Name: The name of the purchaser claiming the exemption.
- 2. Address: The complete business address of the purchaser.
- 3. TID Number: Indiana Taxpayer Identification Number.
- 4. LOC Number: The location number for the tax registration.
- 5. Exemption Type: The type of exemption being claimed.
- 6. Item Description: Details of the items being purchased exempt from sales tax.
What happens if I fail to submit this form?
Failing to submit the ST-105 form correctly can lead to unwanted sales tax charges. If the form is incomplete or missing required fields, the sale may be deemed taxable. Consequently, purchasers may face unexpected costs and potential penalties.
- Sales Tax Charges: Incomplete forms may result in sales tax being applied to your purchase.
- Refund Claims: The inability to claim a refund for improper tax payments can arise from missed requirements.
- Legal Penalties: Inaccurate submissions could lead to compliance penalties from tax authorities.
How do I know when to use this form?

- 1. Retail Transactions: Use this form to purchase goods intended for resale.
- 2. Nonprofit Purchasing: Nonprofits can use this for tax-exempt acquisitions related to their missions.
- 3. Government Purchases: State and local agencies can employ this form for tax-exempt purchases.
Frequently Asked Questions
What is the purpose of the ST-105 form?
The ST-105 form serves to exempt eligible purchases from Indiana sales tax for qualified purchasers.
Who can use the ST-105 exemption certificate?
Registered retail merchants and businesses with sales tax exemption eligibility in Indiana can use this certificate.
How do I fill out the ST-105 form?
Provide required identification numbers and describe the items being purchased while completing all sections.
What happens if I submit an incomplete form?
Failure to complete the form accurately may result in sales tax being charged on your purchase.
Can digital goods be exempt under this certificate?
Yes, digital goods and services are eligible for exemption when properly claimed on the ST-105.
Is there a deadline for submitting this form?
There is no specific deadline; however, it should be submitted before making any exempt purchases.
Can out-of-state purchasers use this form?
Only Indiana-registered businesses can issue this certificate for purchases made within the state.
What type of items can I claim exemption for?
Items such as software and digital services used for business purposes will qualify for exemption.
Do I need to provide anything else with the ST-105?
You may need to present your Indiana Retail Merchant Certificate alongside the ST-105 during purchases.
How can I access the ST-105 form?
You can easily download and print the ST-105 form using PDF editing software like PrintFriendly.
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