Get your Pennsylvania UC tax account through an API

What you can build on UCMS

• Get new correspondence

  Build this

  Opens Correspondence from the UCMS menu and reads the notices there, such as the Election for Relief from Charges and Notice of Solvency Fee for reimbursable employers.

  Takes

  Received since (optional)

  Returns

  Date, notice title, form number, quarter or year it concerns, amount stated, due date

• Get the amount due on the account

  Build this

  Opens Make a Payment and reads everything owed on the account, with any credits available, without paying.

  Takes

  Nothing

  Returns

  Payment items, amount for each, credits available, total amount due

• Check uploaded wage files

  Build this

  Opens Quarterly Reporting, then Manage Uploaded Files, and reads each uploaded wage file's quarter, status and the amount still to pay.

  Takes

  Quarter and year (optional)

  Returns

  File name, upload date, quarter, year, status, amount due

• File a quarterly report online

  Build this

  Opens File Quarterly Report, chooses Online with Pre-Populated employees, enters wages and credit weeks for the quarter and submits it.

  Takes

  Quarter, year, employees with SSN, name, wages and credit weeks, employees working each month

  Returns

  Confirmation number, quarter, year, taxable wages, total amount due

Automate UCMS with a workflow

A workflow runs your methods as one process, with nobody at the screen. A schedule or a call from your own system starts it, the steps run in order, and the result arrives in your inbox or in the systems you already use.

• New UCMS correspondence, every weekday

  Build this

  Starts

  Every weekday at 8:00 Eastern

  Step 1

  Get the notices in Correspondence on UCMS.

  Step 2

  Keep the notices that were not there on the last run.

  Step 3

  Email you each new notice with its title, form number, amount and due date.

• Amount due on the UC tax account, every month

  Build this

  Starts

  Monthly on the 20th at 9:00 Eastern

  Step 1

  Get the amount due on the UC tax account from Make a Payment.

  Step 2

  Stop the run when the total amount due is zero.

  Step 3

  Post the payment items, credits and total amount due to your accounting system's webhook.

• Status of an uploaded wage file, sent to payroll

  Build this

  Starts

  When your payroll system calls the workflow's webhook with a quarter and year

  Step 1

  Check the uploaded wage files in Manage Uploaded Files for that quarter and year.

  Step 2

  Compare each file's status with the last run and keep the files that changed.

  Step 3

  Post file name, quarter, status and amount due back to your payroll system's webhook.

You can run a workflow by hand on every plan, Free included. Schedules and webhook triggers come with the paid plans, from $29 a month.

Once built, one call from your code

Once you have built a method, it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “Get new correspondence” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "www.uctax.pa.gov/get_new_correspondence",
    "input": {
      "received_since": "2026-10-01"
    }
  }'

{
  "status": "completed",
  "data": {
    "employer": "Northwind Fabrication LLC",
    "notices": [
      {
        "date": "2026-11-01",
        "title": "Election for Relief from Charges and Notice of Solvency Fee",
        "form_number": null,
        "concerns": "2026",
        "amount": 412.5,
        "due_date": "2026-12-01"
      }
    ],
    "count": 1
  }
}

An example with invented data, not a ready-made endpoint. The method exists in your organization once you build it, and its name, inputs and fields follow your request.

UCMS’s own options

Pennsylvania offers no API for UCMS. Quarterly wage data can be typed in online for 100 employees or fewer, uploaded as an ICESA or CSV file laid out as in the UC-2010 handbook, or sent to the department's FTP server. Notices, balances and payments stay in UCMS itself.

Read on November 12, 2026: Electronic Filing FAQs, File UC Quarterly Wage/Tax Reports, UC-2010 Wage and Tax Data handbook.

Signing in to UCMS

UCMS signs you in with your Keystone/User ID and password, then a one-time passcode emailed to the address on file, valid for 15 minutes. It asks again on each new device and browser. With Fous you sign in once through UCMS's own sign-in with your own account: the login is sealed with AES-256, the emailed code is handled, and an expired session is signed back in.

Worth knowing

Benefits are a separate system

UCMS is the UC tax side. The UC Benefits System has its own login, so a method built on UCMS reads tax data only.

File all quarters before paying

The department's tutorial says to file the oldest quarter first. Make Payment after a report shows only that report, so use Make a Payment from the menu once every quarter is filed.

Online entry stops at 100 employees

Online filing is for 100 employees or fewer. Above that, wage detail must go by File Upload (500 KB or less) or FTP (up to 500 MB), so a method that files online fits accounts of that size.

Pay uploaded files two business days later

After uploading a wage file, the department says to log in two business days later and pay from Manage Uploaded Files. Checking that list makes most sense from then on.

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