Weighted Share and Capital Allocation Calculator

Share-based allocation divides an amount (profit, expenses, rent, capital, etc.) among partners according to their share ratios. Shares can be entered as fraction numerators (1, 2, 3), percentages (50, 30, 20) or contributed capital; only the ratios matter.

Formula

• Total shares = share₁ + share₂ + …
• Partner amount = total amount × partner share / total shares
• Partner percentage (%) = partner share / total shares × 100
• Rounding difference = total amount − sum of the rounded amounts

Example: 1,000 split with shares 1 : 2 : 3 : 4 gives total shares of 10; the amounts are 100, 200, 300 and 400 (10 %, 20 %, 30 %, 40 %). Splitting 100 equally among three partners gives 33.33 each and a 0.01 rounding difference. In a six-partner example, 1,000 split with shares 1 : 2 : 3 : 4 : 5 : 5 gives total shares of 20; the amounts are 50, 100, 150, 200, 250 and 250 (5 %, 10 %, 15 %, 20 %, 25 % and 25 %).

How to read the result Each partner's amount is that partner's part of the total; the percentage shows the same information as a share of 100 and the percentages add up to about 100 %. A partner with share 0 shows 0. A rounding difference of 0 means the amounts add up to the full total; above 0, you decide how to distribute the leftover cents.

Each amount is rounded half-up to two decimals on its own; the leftover cent is not automatically assigned to anyone but shown as the “rounding difference”, so you decide who receives it. Up to 6 partners are supported and the first share is required. Statutory inheritance shares (Civil Code) are not computed by this tool.