Yes. Duties and taxes change slightly on daily basis due to exchange rate fluctuations. They may also change periodically because of rate changes by the respective customs authorities. They may also change if the customs authorities reclassify an item - which is fully within their right to do so. Yakit does not mark up duties/taxes. The duties/taxes quoted to you are final - we take the risk on these and you will not be asked to pay more for that shipment or Job. Additionally your customer is never burdened with paying anything extra for the shipment on delivery.