Bringing Coins Across The Border

Anything under 10K you don't have to declare... and it doesn't matter the denomination....

If you don't have a working relationship with the customs officers ... I would stick to simply answering their questions short and succinctly.. if they happen to come across the coins in a search or in further questioning... just answer honestly as to why you have them and your intent is with them... you will do fine

I take my rolled searched coins back to the States very few weeks to the bank, they are on the floor of the truck and when asked what are you bringing in I say nothing, it's just extra cash and like it has been said it does not exceed the $10K limit. Same when I come back into Canada with new rolls to search.

However I did just read in an article that it is illegal to export more than $5 USD in Pennies (because of the melt Ban).

I've gone over the border for coins to bring home for CRH. I once brought back $700 in pennies, nickels, half dollars. No one asks the question of "how much change you are bringing back". Fortunately I wasn't searched because like mentioned above, I believe there are limits for import/export. I also had taken the leftover coin back to the US and was not questioned. The banks were awesome as well selling me coin without an account and cashing in my coins for bills.

Amaths
You don't roll coins for most US banks. Just take it in a bag. They have sorters.
They can still refuse to take it. I try to sweet talk them by saying I'm CDN and don't make it down often so I don't have an acct. I have always found a bank to take it.

As far as I understand it, Canadian law and American law are the same in that regard: $10,000 limit. So, you can bring in $9,999.99 (making sure there isn't a lost cent, or more, in your vehicle or on you) no problem. But remember, the US dollar is worth more than the Canadian dollar, so you can only take up to $10K Canadian to or from Canada with no issues, if the US dollar looses value an the Canadian dollar becomes worth more, than it's flipped.
-- What I mean is that if you took $9,999.99 US into Canada, you'd be fine with the American authorities but not with the Canadian; flipped should the value of the currency change.

As far as getting US coins exchanged, banks will do it with or without accounts. Some are picky, and demand accounts for anything. Others demand accounts for more than $X. Whereas the majority of banks I've been to haven't cared at all. And, it might just be around me (in Michigan), but banks tend to like coins rolled. If one bank has a fit, take it to another; or take it to a Walmart or some other larger store, not too much at a time, maybe $2 in cents, $4 in nickels, $5 in dimes, etc. and see if they'd be able to help you out. Most do.

I live about 10 minutes from the Washington state border, and plan on getting either a box of nickels or dimes in the next little while. Can anyone tell me which banks don't require an account?