"Nova Scotia’s HST combines the provincial value-added tax with the federal goods and services tax (GST), and it is applied to the same types of goods and services. The federal portion is five per cent and, on April 1, the provincial portion will decrease from 10 to nine per cent."
More information can be found here in the Provincial news release: https://news.novascotia.ca/en/2024/10/23/nova-scotias-hst-drop-2025