The routine parts genuinely do not need professional help. Registering a business entity, obtaining a licence, getting a tax identification number, and opening a business bank account are administrative processes with clear instructions, and the state and federal resources explaining them are free. Paying somebody several hundred dollars to complete forms you could complete is a common first year expense with no return.
Where the calculation changes is anywhere a mistake is expensive and difficult to reverse. A partnership without a written agreement is the clearest example, because the default rules that apply in its absence are frequently not what either party assumed, and the disagreement surfaces at the worst possible moment. Any business with more than one owner should have that document, and it is worth doing properly.
A lease is the second, since commercial leases are long, one sided by default, and contain terms with substantial financial consequences. Personal guarantees, repair obligations, and what happens if you need to leave early are all negotiable and rarely negotiated by somebody reading it for the first time.
Anything involving a name you intend to keep deserves a search before you commit rather than a filing afterward. A clearance search identifies conflicts that free databases will not surface, and discovering a problem after signage, a domain, and a year of accumulated visibility is the expensive version of this. That is an hour of somebody's time against a rebrand.
Contracts you did not write and do not fully understand belong in the same category. A client agreement from a larger organisation, a supplier contract, or anything containing indemnities and liability caps is worth reading with somebody who knows what those clauses do. You are not obliged to accept terms as offered, and most are more negotiable than they appear.
Templates are a reasonable starting point for your own documents, provided they are read rather than signed blindly. A template describes a general situation and omits whatever is specific to yours, and the clauses worth checking personally are scope, ownership of work, and how either party ends the arrangement.
Consider the cheaper forms of access before assuming a retainer. Many attorneys offer a fixed fee consultation, small business development centres provide free guidance, and some services provide document review at a defined price. An hour of properly directed advice is frequently sufficient, and knowing which question to ask is most of the value.
Then be honest about which category a decision falls into. This is general information rather than advice on your situation, and the useful test is whether being wrong would cost more than the consultation. If it would, the consultation is the cheaper option.
Ask about fixed fees rather than assuming hourly billing, since many attorneys will quote a set price for a defined piece of work such as reviewing a lease or drafting a partnership agreement. That removes the uncertainty that stops people asking, and it makes the cost comparable against the risk.
Find somebody who works with businesses your size rather than the best available firm, because a practice serving larger clients will apply a level of process appropriate to them. A solo attorney or a small practice familiar with first year businesses gives more useful advice at a considerably lower cost.