You can find the official application for the SBA Paycheck Protection Program loan here. The official SBA website for this can be found here. The Department of the Treasury has a landing page with resources here but the most relevant information is their summary sheet. We’ve also put together a useful step by step application guide.
Update: As of Thursday, April 2nd the Department of the Treasury released more clarifications on the PPP program. There is also a new PPP loan application called SBA Form 2583.
Update #2: There are several resources out now showing which lenders are accepting applications. You can find a list of banks that Gusto has crowd sourced here. We have also had clients have success submitting applications with FinTech companies such as Lendio, Fundera and Kabbage.
Update #3: The Department of the Treasury released further clarifications as of Monday, April 6th 2020 in the form of an FAQ document, which you can find here.