What is TPA and why does it block filings?

Third Party Administrator (TPA) access is a state-level authorization that allows Check to file taxes on behalf of an employer with a given agency. Certain state and local agencies require that the employer explicitly grant this access — Check cannot bypass or complete it on their behalf. Other agencies only require it for amended filings or tax notice resolution.

In the case where it is required to file an original tax return, if TPA access has not been granted, the employer's filing will appear as blocked in the Filing API and on the Console Blocking Report. It will remain blocked until resolved. TPA is a one-time setup per agency, but must be completed before the filing close date.

For partners:

• Monitor the Blocked Filings Report for TPA-related blockers.
• Communicate blockers to employers and guide them through TPA setup (see per-agency instructions below).
• (Coming in April 2026!) Once the blocker is resolved, you can click “Remove blocker” in the Filing page in Console to remove the TPA-related blocker and queue for filing.

For employers:

• Log into the relevant state agency portal and authorize Check as your TPA. Steps vary by agency.
• Act promptly — some agencies may take a few days to process the request, and waiting until the deadline risks a late filing.

How does this relate to the closed_at date?

Check closes filings at least 8 business days before the due date. Any filing that remains blocked after the closed_at date — including due to missing TPA — will be treated as a delayed filing for billing purposes. Resolving TPA blockers before the close date avoids this.

Section 1 — TPA required before we can file

Without this, the filing is blocked and will appear on the Blocked Filings Report. TPA is a one-time setup per agency but must be complete before the filing close date.

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Check-initiated (no employer portal action, but access is still required):

Arkansas Division of Workforce Services (AR SUI) — Access is achieved by entering client EIN & FEIN.

Connecticut Paid Leave (CT PFML) — Check submits an enrollment file to the agency that adds and deletes companies to our agent listing.

Florida DOR (FL SUI) — Check submits an enrollment file to the agency that adds companies to our agent listing.

Kentucky Unemployment Insurance Portal (KY SUI) — Check submits the request: the employer has 14 days to respond, if no response, TPA access is achieved. ****

Louisiana Wage & Tax System (LA SUI) — Check submits an enrollment file to the agency that adds companies to our agent listing.

Massachusetts DUA (MA SUI) — Check submits the signed POA that is completed as part of onboarding.

Vermont Dept. of Taxes (VT SIT) — Check sends a Third-Party Authorization Form for signature.

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Section 2 — TPA required for amendments, refiles, SUI Rate Exchange, and notice resolution

Not needed for an original filing. Becomes required the moment an amendment, refile, or agency notice comes up — at which point the employer will be contacted and the work waits until access is granted.

Approve applicant in portal | | Washington L&I | ✅ | — | — | ✅ | POA-based |

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Check-initiated (no employer portal action, but access is needed for amends, refiles, tax notice research, or SUI Rate Exchanges):

Note — if the agency requires a POA, it is important that the owner/officer has signed that POA for it to be accepted. In the event an owner/officer did not sign the POA, the current form will be deleted from the company which will force a new signing requirement.

Alaska Labor and Workforce Development (AK SUI) — Basic access is achieved by entering client details.

Iowa Workforce Development (IA SUI) — Check submits the signed POA that is completed as part of onboarding.

Maryland Beacon (MD SUI) — Check submits the signed POA that is completed as part of onboarding.

Montana Department of Labor (MT SUI) — Check submits the signed POA that is completed as part of onboarding.

Ohio Eric (OH SUI) — Check submits the signed POA that is completed as part of onboarding.

Oregon Employment Department (Oregon Combined) — Check uploads an enrollment file with prior quarter tax details. This enables the SUI Rate Exchange process.

North Carolina SUITS (NC SUI) — Check submits the signed POA that is completed as part of onboarding.

Tennessee Labor & Workforce Dev. (TN SUI) — Basic access is achieved by entering client details.

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Section 3 — Optional, but it helps us help you

Not required to file, amend, or resolve notices today. Granting it lets Check see rates, balances, payment history, and return detail directly — which usually means faster answers and fewer questions back to you.