What the filing does and does not cover
Online incorporation services prepare and submit the formation document, and some add a registered agent and a template set of bylaws or an operating agreement. They generally do not advise on whether a corporation or an LLC fits your plans, which state to form in, or how that choice affects taxes and investors. Templates rarely address what owners actually argue about later, such as how decisions are made, what happens when someone leaves, and how ownership is valued. The service is also not your lawyer, so its staff cannot give legal advice and your communications with them are not privileged. None of that makes these services a bad idea; it means the filing is one step rather than the whole job.
Steps people miss after forming
New York requires a newly formed LLC to publish notice of its formation in newspapers designated in its county and to file proof of publication within a set period, and missing that step can suspend the company's authority to do business. Many online filers never hear about it. A company formed in another state but doing business in New York generally needs to register here as well. Reporting rules about who owns a company have changed at both the federal and New York state levels, so what applies to your entity should be confirmed when you form it. A tax identification number, a bank account in the company's name, and signed owner agreements are the other basics that keep business and personal finances apart.
Reviewing what was already filed
If you formed online, we start with what is on file: the formation document, any stock or membership records, and whatever agreements the owners signed. We check whether the company's records match what the owners believe they agreed, whether the publication step and any out-of-state registrations are complete, and whether shares or interests were actually issued. Where something is missing, it can often be documented now, and that is far easier before an investor, lender, or buyer asks for it. We also flag where a template agreement does not match how you intend to run the business.