The Flexible Spending Account (FSA) and Health Savings Account (HSA) vendor will change effective January 1, 2026. This web page will be continuously updated with information about the transition.
Summary
Total Administrative Services Corporation (TASC) is the new third-party administrator for the FSA, HSA, and Parking & Transit Accounts effective January 1, 2026. This change was approved by the Group Insurance Board (GIB) early 2025. Below is a list of the accounts that TASC will administer starting January 1, 2026.
- Health Care Flexible Spending Account (FSA)
- Limited Purpose Health Care FSA
- Dependent Day Care Account
- Health Savings Account (HSA)
- Parking & Transit Accounts
Optum will no longer be the third-party administrator after December 31, 2025. However, health care FSA claims incurred for the 2025 plan year must be submitted to and substantiated with Optum by March 31, 2026. To avoid the payroll withholding process, participants should resolve their unsubstantiated claims with Optum by December 31, 2025.
Communications
The communications sent to participants with active accounts are below. Communications will be sent by Optum (2025 vendor) and TASC (2026 vendor).
All communications will be sent to the email or mailing address associated with your Optum account.
Key Dates
The change will be effective January 1, 2026 but there will be some processes completed by Optum early 2026.
OPTUM (2025 PLAN ADMINISTRATOR)
| Key Dates | Notes |
| 12/31/2025 | The last day to:
|
| 03/31/2026 | The last day to submit claims (FSA, Dependent Day Care Account, and Parking & Transit Account) to Optum for the 2025 plan year. |
TASC (2026 PLAN ADMINISTRATOR)
| Key Dates | Notes |
| 10/06/2025 – 10/31/2025 | Enroll or re-enroll in the HSA, FSA, Dependent Day Care Account, and Parking & Transit Accounts for the 2026 plan year.
Reminder: You may enroll or re-enroll in the Parking & Transit Accounts at any time throughout the year. |
| 12/15/2025 | TASC will begin sending welcome letters and payment cards via U.S. Mail. |
| 12/29/2025 | Initiate the transfer of your HSA from Optum to TASC on/after this date. Watch for a communication from TASC after the Open Enrollment period ends (October 31) that will include information about this process. |
| 01/01/2026 | Begin to use your TASC payment card for healthcare FSA expenses incurred on/after January 1, 2026. |
| 01/08/2026 | After the first 2026 payroll has processed, begin to use your TASC payment card for HSA, Dependent Day Care, and Parking Account expenses.
Reminder: For the above mentioned accounts, the funds must be in your account before you use them. |
| 04/15/2026 | Access your carryover funds (health care FSA, Parking and Transit Accounts) transferred from Optum to TASC. Carryover funds will not be available to use prior to this date.
Note: If you go through the payroll withholding process due to unsubstantiated claims from the 2025 plan year, there could be a delay with your carryover funds being transferred from Optum to TASC. |
Frequently Asked Questions
FSA
What will happen to my healthcare FSA carryover funds if I am enrolled in 2025 but will not be enrolled in 2026?
If the balance in your healthcare FSA is less than $50 on March 31, 2026, then you are not eligible for carryover; remaining funds will be forfeited.
If the balance in your healthcare FSA is greater than or equal to $50 on March 31, 2026, up to $660 of healthcare FSA funds will automatically transfer from Optum to TASC around April 15, 2026. No action is necessary on your part.
Optum sent me a communication requesting documentation to substantiate my healthcare FSA claims from 2025. How should I resolve these claims on/after January 1, 2026?
Claims incurred in 2025 that need to be resolved in 2026 must be substantiated directly with Optum by March 31, 2026.
HSA
Why did I receive a new Optum payment card for my HSA if Optum will no longer be the administrator in 2026?
Optum automatically sends new cards 30 days prior to the expiration date. If you have a balance in your HSA with Optum, you may continue to use your Optum HSA payment card until you exhaust your HSA or transfer your HSA balance (whichever occurs first).
What will happen to my HSA with Optum?
On/after December 29, 2025, you may transfer your HSA from Optum to TASC. There is no cost to transfer your HSA balance from Optum to TASC. Watch for information from TASC after the Open Enrollment period ends (October 31) that explains the steps you can take to initiate the transfer of your HSA.
Or you may leave your HSA with Optum. If you leave your HSA with Optum, a $3.00 monthly administrative fee will automatically be deducted from your Optum HSA starting in April 2026. Funds remaining in your Optum HSA may be used for eligible health, dental, and vision expenses.
Or you may transfer your Optum HSA to an HSA administrator of your choice. If you choose this option and enroll in an HDHP/HSA for 2026 through the Universities of Wisconsin, a TASC HSA will still be opened for you since the TASC HSA is where your employee and employer contributions must be deposited in 2026.
Will the beneficiary for my HSA that I have on file with Optum transfer to my HSA with TASC?
You will need to complete a new beneficiary form for your HSA with TASC.
Questions
- 2025 FSA or HSA claims inquiries: Contact Optum at 1-833-881-8158 or my.optum.com/ETF
- 2026 FSA or HSA claims inquiries: Contact TASC at 1-888-276-3147 or www.etf-tasc.com
Every effort has been made to ensure this information is current and correct. Information on this page does not guarantee enrollment, benefits and/or the ability to make changes to your benefits.
Updated: 10/22/2025