I had the Delaware registration / California operating setup. The wind down is just as many steps. Cancelling sales / use tax registrations, the SoS registration, making your FTB tax is all paid and then cancelled in both states. Making sure both state and federal returns are marked final and don't close your bank account until you've paid them all.

wow you all should read the laws, specifically the consequences

not registering your out of state entity basically has no consequences, its a lower consequence than failing to return a book to the library and has the same level of resources set aside to enforce it

reach the same conclusion yourself as this is obviously not condoning anything, but anyone can run circles around you with the same runway and resource prioritization by ignoring these states

you might end up paying the same registration fees eventually just later, and depending on the state you get retroactive limited liability in the courts.

Remember tell things:

1) municipalities are in competition with each other to attract business

2) asking them if a certain level of compliance is necessary is like asking a barber if you need a haircut. It’s like asking the oil changer if they noticed anything else. Learn the consequences yourself and you’ll be able to make objective decisions.

i wish there was a service that would just tell me what fees i needed to pay. this was a big pain in the butt and most of the value i paid for for professional help.