Work out the taxes on an import the way Customs does, from CIF to assessable value to the CD → RD → SD → VAT cascade. Then see the number that matters for pricing: your landed cost, with sunk duties separated from the VAT and AT you get back.
The gap between cash at port and landed cost is working capital, not cost. If your costing sheet adds VAT or AIT to product cost, your prices are too high. In Odoo, only CD, RD, SD and local charges belong in the landed-cost lines.
Rates change every June with the budget and are set per HS code, sometimes with SRO exemptions. The FY 2026-27 Finance Act changed several (for example, AT on POS machines and EV chargers went from 7.5% to 0%, and some cosmetics' SD was cut). Look up your HS code on the Bangladesh Customs operative tariff and check Compliance Watch for recent changes.
Estimate only. The assessed value, exchange rate and applicable SROs on your bill of entry decide what you actually pay. Use this for costing and cash planning, and confirm with your C&F agent.