mmr said:

Is there any way to make the program tack the expenses besides the duty onto the inventory?

Automatically?  No.

You can manually add the freight cost using inventory 'Adjustments' or by using 'Build from Item Assembly'

 - It is possible to over-ride the G/L account to your freight expense account, when using 'Adjustments', while

 - 'Build from Item Assembly' uses the linked account set up under Setup | Settings | Inventory | Linked Accounts as 'Item Assembly Costs'.  

If you don't use Item Assembly for anything else, you could set up another 'Freight included in inventory account' and change the default account.

Whether all that effort is worth it, depends on how much of your COGS is freight-in.

*******************************************************************************************************

If you never use Purchase Orders, and aren't worried about messing up the 'Last Purchase Price' in your system, you can also record the total landed cost of items, with freight as a negative amount.  

i.e. you purchase an item for $1000, and you separately pay your freight vendor $200, so you would record the invoice purchase price as $1,200, and record freight of -$200, then fix the rounding differences on the tax.  

If you were using Sage 50 Quantum, this landed cost by vendor will also make the Item Price Comparison report more useful.

mmr said:

Is there any way to make the program tack the expenses besides the duty onto the inventory?

Automatically?  No.

You can manually add the freight cost using inventory 'Adjustments' or by using 'Build from Item Assembly'

 - It is possible to over-ride the G/L account to your freight expense account, when using 'Adjustments', while

 - 'Build from Item Assembly' uses the linked account set up under Setup | Settings | Inventory | Linked Accounts as 'Item Assembly Costs'.  

If you don't use Item Assembly for anything else, you could set up another 'Freight included in inventory account' and change the default account.

Whether all that effort is worth it, depends on how much of your COGS is freight-in.

*******************************************************************************************************

If you never use Purchase Orders, and aren't worried about messing up the 'Last Purchase Price' in your system, you can also record the total landed cost of items, with freight as a negative amount.  

i.e. you purchase an item for $1000, and you separately pay your freight vendor $200, so you would record the invoice purchase price as $1,200, and record freight of -$200, then fix the rounding differences on the tax.  

If you were using Sage 50 Quantum, this landed cost by vendor will also make the Item Price Comparison report more useful.