Don't forget the larger companies who'll try to negotiate Net 90, one month in arrears, in which they'd still probably feel they had another 2 weeks of wiggle room. Companies try that. With me it ends up Net 30 as usual when we edit the service agreement, but lordy do they TRY that.

Which is why you need airtight service agreements, and then the willingness to follow up on them. Obligatory video, "Fuck You, Pay Me": [https://www.youtube.com/watch?v=jVkLVRt6c1U]

I only ever had two customers (out of > 200) not pay in about 15 years. One got a lawyer letter and paid up. The other (new customer, and one I was warned to be wary of) I actually dragged to district court to receive a judgement. They then still wouldn't pay. I figured there was no one there I'd ever see again in my career... so I sent the sheriff. They wired payment within hours.