額 means amount (money); forehead and is a JLPT N2 kanji. It has 18 strokes and uses the head / page radical (頁).
Stroke order · 18 strokes
On'yomi (音読み)
ガク
Kun'yomi (訓読み)
ひたい
Radical
頁 · head / page
Strokes
18
How to remember 額
The open space at the front of the head (頁) — the forehead; a price's figure is also "written on the forehead." 金額 (monetary amount), 全額 (full amount).