# Get your LaTAP filing history through an API > Read the filing history, payment history and correspondence of a Louisiana withholding or sales tax account in LaTAP with one API call each. A workflow can check every client each Monday and email you the accounts missing last quarter's L-1. Page: https://fous.com/automate/latap Updated: 2026-11-12 Works with your own LaTAP account. Fous is an independent product. ## What you can build on LaTAP ### Get withholding filing history Reads the filed returns of a withholding account in LaTAP: each period's L-1, when it was filed and its confirmation number, with the payment history beside it. - Takes: Louisiana Revenue Account Number, earliest period (optional) - Returns: Period, form, filed date, confirmation number, amount, payments with date and amount, account balance ### Get sales tax returns and pending payments Reads View Returns and View Pending Payments on a Sales Tax Account in LaTAP: the General Sales & Use Tax Returns filed and the payments still scheduled. - Takes: Louisiana Revenue Account Number, earliest period (optional) - Returns: Period, filed date, confirmation number, tax due, pending payments with date and amount ### List new correspondence Reads the correspondence the Department has posted to an account in LaTAP, such as notices and letters, with the date and the tax account each one is about. - Takes: Louisiana Revenue Account Number (optional), received since (optional) - Returns: Date, title, tax account, period ### Request a sales tax clearance Opens Request a Sales Tax Clearance on a Sales Tax Account in LaTAP, submits the request and reads the confirmation page. - Takes: Louisiana Revenue Account Number - Returns: Confirmation number, account, request date, status ## Automate LaTAP with a workflow A [workflow](/product/workflows) 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. ### Withholding accounts missing an L-1, every client Starts: Every Monday at 8:00 1. For each withholding account you name, get the withholding filing history. 2. Keep the accounts with no L-1 filed for the last quarter, or with a balance due. 3. Email you the list, one section per account, with the latest period filed and the balance. ### New LaTAP correspondence, posted to your own system Starts: Every weekday at 7:30 1. For each account you name, list the correspondence in LaTAP. 2. Keep the items that were not there on the last run. 3. Post each one, with its date, title, tax account and period, to your webhook. ### Sales tax returns and payments, handed to accounting Starts: Monthly on the 1st at 9:00 1. For each Sales Tax Account you name, get the returns filed and the pending payments. 2. Keep the returns filed since the last run. 3. Post period, confirmation number, tax due and pending payments to your accounting 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](/product/methods), it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “Get withholding filing history” would look like. Example request: ``` curl https://api.fous.com/v1/runs \ -H "Authorization: Bearer $FOUS_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "method": "latap.revenue.louisiana.gov/get_withholding_filing_history", "input": { "account_number": "1234567-001", "earliest_period": "2026-01" } }' ``` Example response: ``` { "status": "completed", "data": { "account_name": "Northwind Logistics LLC", "account_number": "1234567-001", "tax_type": "Withholding", "returns": [ { "period": "2026 Q3", "form": "L-1", "filed_date": "2026-10-27", "confirmation_number": "0-482-901-337", "amount": 18420.55 } ], "payments": [ { "date": "2026-10-15", "amount": 6140 } ], "balance": 0, "currency": "USD" } } ``` 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. ## LaTAP’s own options The Louisiana Department of Revenue offers no API for reading your own account. It publishes XML schemas for filing sales tax (LA FER) and withholding (LA FSET) through its web services, points to its vendor helpdesk for electronic filing, and lists third-party software vendors for sales and use tax. Everything else is done in LaTAP. | Option | What it covers | What it takes | | --- | --- | --- | | LA FER and LA FSET web services | Electronic filing of sales tax and withholding returns as XML, against yearly schemas, business rules and an implementation guide. | LDR's vendor helpdesk for electronic filing; both web services use TLS 1.2. | | Third-party sales tax software | Software from the vendors on LDR's Third Party Filing list, for sales and use tax returns. | A product from LDR's vendor list, last updated November 7, 2024. | | LaTAP by hand | Filing and paying returns, filing and payment history, balances, correspondence, clearances, resale certificates and account updates. | A LaTAP web login for the business, or a tax preparer login with Third Party Access to the client. | Read on November 12, 2026: [Sales Taxes - FER](https://revenue.louisiana.gov/tax-professionals/e-services/sales-taxes-fer/), [Withholding Tax - FSET](https://revenue.louisiana.gov/tax-professionals/e-services/withholding-tax-fset/), [Third Party Filing](https://revenue.louisiana.gov/tax-professionals/e-services/third-party-filing/). ## Signing in to LaTAP LaTAP signs you in with the username and password of the web login you create when you register, and its login page has Forgot Username and Forgot Password. Tax preparers sign up for their own login and request Third Party Access to each client. With Fous you sign in once through LaTAP's own sign-in with your own account, and the login is sealed with AES-256: code and AI agents never see it. ## Worth knowing - **Withholding is electronic only**: Louisiana withholding returns and payments must be filed and paid electronically, through LaTAP or approved software. A quarterly L-1 is due for every assigned period, even when nothing was withheld. - **The confirmation number is your proof**: LDR asks you to check your filing history in LaTAP and have the confirmation number ready when a delinquent notice arrives for a return you filed. Keep it with each period. - **Preparers work through Third Party Access**: A tax preparer registers its firm in LaTAP and then requests Third Party Access to each client's individual or business account. A method built on that login can read any client the login has access to. - **Each tax is its own account**: LaTAP adds each tax a business registers, such as sales tax or withholding, as its own tax account with its own page. A method takes the account as an input. ## More in Government: US state and local tax - [Ohio Business Gateway](https://fous.com/automate/ohio-business-gateway.md) - [MyFTB](https://fous.com/automate/myftb.md) - [CDTFA Online Services](https://fous.com/automate/cdtfa-online-services.md) - [Colorado Revenue Online](https://fous.com/automate/colorado-revenue-online.md) - [Florida DOR eServices File and Pay](https://fous.com/automate/florida-dor-eservices-file-and-pay.md) - [Georgia Tax Center](https://fous.com/automate/georgia-tax-center.md) - [INTIME](https://fous.com/automate/intime.md) - [Maryland Tax Connect](https://fous.com/automate/maryland-tax-connect.md) - [MassTaxConnect](https://fous.com/automate/masstaxconnect.md) - [Michigan Treasury Online](https://fous.com/automate/michigan-treasury-online.md) - [Minnesota e-Services](https://fous.com/automate/minnesota-e-services.md) - [My DOR](https://fous.com/automate/my-dor.md) - [myconneCT](https://fous.com/automate/myconnect.md) - [MyDORWAY](https://fous.com/automate/mydorway.md) - [myPATH](https://fous.com/automate/mypath.md) - [MyTax Illinois](https://fous.com/automate/mytax-illinois.md) - [MyTaxes Kentucky](https://fous.com/automate/mytaxes-kentucky.md) - [NCDOR eBusiness Center](https://fous.com/automate/ncdor-ebusiness-center.md) - [New Jersey Tax Portal](https://fous.com/automate/new-jersey-tax-portal.md) - [NY Business Online Services](https://fous.com/automate/ny-business-online-services.md) - [OH|TAX eServices](https://fous.com/automate/oh-tax-eservices.md) - [Texas Comptroller Webfile](https://fous.com/automate/texas-comptroller-webfile.md) - [TNTAP](https://fous.com/automate/tntap.md) - [Virginia Tax Business Online Services](https://fous.com/automate/virginia-tax-business-online-services.md) - [Wisconsin My Tax Account](https://fous.com/automate/wisconsin-my-tax-account.md) Other industries: [EAMS (Washington ESD)](/automate/eams-washington-esd), [Würth Online-Shop](/automate/wurth-online-shop), [Workday VNDLY](/automate/workday-vndly), [AAH Hub](/automate/aah-hub), [HealthCare.gov for agents and brokers](/automate/healthcare-gov-for-agents-and-brokers), [CCMS](/automate/ccms). ## Frequently asked questions ### Does LaTAP have an API? No, not for reading your own account. The Department publishes XML schemas for filing sales tax (LA FER) and withholding (LA FSET) through web services, with its vendor helpdesk for electronic filing, and lists third-party sales tax software vendors. Filing history, balances and correspondence are in LaTAP. ### Can I still file a Louisiana withholding return on paper? No. Louisiana withholding returns and payments must be filed and paid electronically, through LaTAP or another Department-approved method. An L-1 is required for every assigned period, even a zero return. ### How do I check that a LaTAP return or payment was received? Log in to LaTAP and look at the filing history and payment history of the account, which show the confirmation information. With Fous, a method you build reads that history and returns it as JSON, and a workflow can check it every week. ### Can an accounting firm reach its clients' accounts with one login? Yes, through Third Party Access. A preparer signs up in LaTAP, registers its firm, then requests access to each client's individual or business account. Methods built on that login read what it can see, one client at a time. ### Is Fous affiliated with the Louisiana Department of Revenue? No. Fous is an independent product. You use it with your own LaTAP login, and a method reads and does only what that account can. Fous is an independent product: it is not affiliated with, endorsed by or sponsored by the operator of LaTAP (Louisiana Department of Revenue). The name is used only to say which system this page is about. Something here wrong or out of date? Write to legal@fous.com.