Changing a single member LLC to multi member turns the simplest agreement into the full one. The single owner's capital account becomes a share of a company that now has a total; the new member's contribution at an agreed valuation buys the rest; and clauses the single-member document never needed, distribution by share and the vote a decision needs, are written for the first time with numbers in them. This page walks that change as the operating agreement records it, works an example, and points at the free worksheets on this site that work the new shares and the thresholds. It publishes no clause text and nothing about the state's filing or the tax consequence of the change, which are counsel's and the accountant's.
What the single-member agreement already records, and what it becomes
The single-member worksheet carries one figure through the year: the capital account, opened by the contribution and reduced by draws after a tax set-aside. When a second member is admitted that balance is the first member's contribution to the new schedule. A capital account of $80,000 and a new member's $20,000 make a company of $100,000 with shares of 80% and 20%, and the operating agreement worksheet works exactly that from the two figures.
Adding a member to a single member LLC at a valuation
Members often value the company above its capital account, because it has trading history. At an agreed $200,000 valuation, $50,000 of new money buys a fifth of the $250,000 company and the founder keeps four fifths. The amendment worksheet works the new member's share and the founder's dilution from the valuation and the contribution entered; the valuation itself is the members' own figure and this site publishes no method for it.
The clauses that appear for the first time
A multi-member agreement needs a distribution rule, a reserve, a threshold for major decisions and a rule for admitting the next member and amending the agreement. Each is a number, and the worksheets turn them into figures the two members can see: distributions on a given profit by their shares, and the capital a decision needs at their chosen threshold, which with two members decides whether either can act alone. The wording is counsel's; the numbers are worked here.
What this page leaves to the state and the accountant
Whether the change requires a filing with the state, and how a company that was taxed as a single owner is treated once it has two members, are questions for the filing office and the accountant and this site does not answer them. LLC Lane Pro keeps the old capital account, the new schedule and the amendment that made the change against the company; the free worksheets work the arithmetic one step at a time with no account.
Questions people ask about how to change a single member llc to multi member
Do I need a new operating agreement when I add a member to a single member LLC?
The document has to record things it never needed to before, distributions by share and voting thresholds among them; whether that is a new agreement or an amendment is a drafting question for counsel. The numbers are worked here either way.
How is the new member's share worked out?
Their contribution over the agreed valuation plus the contribution. At $200,000 and $50,000 that is 20%; the amendment worksheet works it and the founder's dilution from the figures you enter.
Does converting a single member LLC to multi member change how it is taxed?
That is the accountant's question and this site does not answer it. The single-member worksheet's tax set-aside is the owner's own figure, and no rate is published here.