Startup payroll goes wrong in the same three places every time: registering too late, paying founders without settling how they are engaged, and treating people as contractors who are really employees. None of the three is a software problem and all of them are cheaper to fix before the first payment than afterwards.
Register before anybody is paid
Employer registration and the reference numbers it produces have to exist before a first payment, and obtaining them takes days rather than minutes. Startups routinely leave this until the week somebody expects money, which produces either a late payment or a payment made outside the system that has to be corrected later at more cost than the delay would have been.
Settle founder pay properly
How founders are engaged by their own company changes what is owed, and the answer depends on the structure. It is the one question worth an accountant even if you intend to run everything else yourself, because getting it wrong compounds quietly across every period and is unpleasant to unwind at the first audit or funding round.
Contractor or employee is a legal test
It is decided by how the work is actually done rather than by what the agreement says, and misclassification is the most expensive mistake available in this area. Startups are exposed because early hires often start informally. Decide the status at the start of each engagement and revisit it when the work changes shape.
Questions people ask about startup payroll
When should a startup move off spreadsheets?
At the first employee. Payroll is not a calculation problem, it is a deadline and filing problem, and software handles the part that generates penalties.
Can we pay everyone as contractors at first?
Only where the test is genuinely met. Convenience is not a basis, and reclassification later carries back taxes and penalties.
What about employees in another country?
Payroll does not cross borders. You need a local entity, a local provider or an employer of record before the first payment.