Drawback claims (assuming this is the correct thing to use) are quite difficult to do. Requires a customs broker. You used to be able to file them manually as a normal person but they ended that when the first 25% tariffs on China went into play. You need to be a customs broker to get access to the software you need to file the claim...

I spent a bit of time attempting to find a broker [1] to handle this for our project (since we had a large amount of eligible refunds due to importing then sending out of country after QA) but in the long run gave up...which is what they hope for.

Keeping an eye on all this to see how it plays out.

[1] Not only did I look for a broker but I debated becoming one myself due to this.

I would love for a self-service broker to materialize.

i.e. Where you upload your paperwork, fill in and certify the forms online, make a payment, and the broker just feeds all that through. You do the work, they're just your gateway to the system.

I've used courier's internal brokers (like DHL/UPS offer, at their ripoff rate), professional private brokers, etc. and seen all of them make stupid mistakes costing me money/time (eg. including the shipping cost in value for duties, transposing the wrong currency at face value, etc). I could do a better job myself, and frankly with a decent portal it would take me less time. Heck I bet I could build a fairly automated system that is more efficient (higher-margin) and accurate.

Here in Canada there's new legislation that even if you use a third party broker, you still need to post a security or bond with CBSA (see CARM) maintained on an annual basis. It boggles my mind they made the infrastructure to deal with money from all the individual buyers, but not a self-service portal to deal with the forms. Self-clearing here still entails a physical visit to a CBSA office.