Free tool

Assessment Calculator

Work out a per-share assessment rate, total what one shareholder owes, or paste your whole shareholder list and get a printable billing roll plus one formal notice per shareholder.

Runs entirely in your browser — nothing you enter is ever sent anywhere.

Instant calculators

No paste required — just type numbers below.

Total shares & rate per share

Add one row per share class. Fill in either rate per share or target total to raise below the table and we'll compute the other — then, if you like, apply that rate to every class at once. Each class's own rate stays editable afterward.

Share class Shares Rate / share Amount Remove
Total shares: 0 $0.00
Fill either this or rate per share — the other fills in automatically.

What does one shareholder owe?

Amount owed
$0.00

Paste a shareholder list

Optional. Paste rows from a spreadsheet — one shareholder per line: name, shares, and optionally a class. Tab-separated (a straight copy from a spreadsheet) works best; plain comma-separated works too. A header row is fine — we'll detect and skip it.