For HUF registration in Uttar Pradesh, the stamp duty is generally around Rs. 6000/- for a settlement deed, though this can vary by state. It's advisable to consult your local Sub-Registrar, a document writer, or a lawyer for the exact stamp duty applicable in your area, as it's a state-level subject. An HUF, or Hindu Undivided Family, comprises descendants of a common male ancestor, managed by a Karta, with coparceners having rights to partition property.