The theatre business is much like any other business where up to 30 days is considered an ontime payment, but after that it's "Past due". However, your credit and history of payment may determine when your payments will be due. When you first start out some suppliers may want payment COD or before the next order if that order is less then 30 days since the last order. Once you have established yourself and have made regular ontime payments over a reasonable period of time, the 30 day rule will apply.
The only payment that doesn't follow that rule of thumb are the film payments. Does that surprise anyone? As I have been in this business for many many years, I can atest to the fact that 30 days was the rule for film payments as well, and still is for me. Many of my booking acounts have been in business for less then ten years and are forced to follow a different set of rules. Today film rental payments are often due differently from picture to picture as well as from distributor to distributor. On blockbuster movies a 14 day or even a 7 day pay is often the case. The payment is due within 14 or 7 days after the finish of any given week. For most run of the mill movies they expect payment before they will release a print for the next film from there company or 30 days, whichever is first.
Of course there are also those dreaded advances and guarantees. An advance is when you are required to put up money before recieving the film with that amount then being credited towards the final bill. If your final bill is less then the advance then the balance is credited towards your next picture. A guarantee is when you must guarantee a minimum amount that you will pay for the run of a film. If your film rental as based on the percentages, 70, 60, 50 etc. do not add up to the guarantee... tough! They get to keep the rest. Avoid guarantees if at all possible or keep them as low as possible. We here in Pennsylvania do not have advances or gurantees as both are illegal by law as set forth in the Pennsylvania Motion Picture Fair Trade Practices Law. Some distributors (namely Sony) have a clause in there contract that requires you to have a separate bank account just for their film rental, and that it be deposited there daily with them having access to withdraw it directly. Yes, that IS in there new master contract... however, I know of no one that does that. Everyone just ignores it, and thank god they do.
I,like GTE only use one bank account, but also list B.O. and Concession separately for accounting purposes. Concessions are usually paid on 30 days as well, but again depending on your case history you may be required to pay before the next order if that is less then 30 days since the last one.