> ## Documentation Index > Fetch the complete documentation index at: https://docs.0xmonaco.com/llms.txt > Use this file to discover all available pages before exploring further. # Sub-Accounts > Run separate strategies from separate margin accounts. export const LearnStyles = () => { useEffect(() => { const revealReference = () => { let id; try { id = decodeURIComponent(window.location.hash.slice(1)); } catch { return; } if (!id) return; const target = document.getElementById(id); if (!target) return; let opened = false; for (let parent = target.parentElement; parent; parent = parent.parentElement) { if (parent.tagName === "DETAILS" && !parent.open) { parent.open = true; opened = true; } } if (opened) target.scrollIntoView({ block: "start" }); }; const frame = requestAnimationFrame(revealReference); window.addEventListener("hashchange", revealReference); return () => { cancelAnimationFrame(frame); window.removeEventListener("hashchange", revealReference); }; }, []); return ; };
Sub-accounts are extra margin accounts that sit beside your parent margin account. Each one holds its own collateral and its own positions, all under the same wallet. ## Why Use Sub-Accounts Sub-accounts are **isolated**. A loss in one sub-account never draws on another, or on your parent margin account. Use them to keep a hedge apart from your main book, to run one strategy per account, or to give a bot or agent an account of its own. ## Funding A Sub-Account | Movement | How it works | | - | - | | Deposit / withdrawal | On-chain, through your parent margin account only. | | Parent → sub-account | Internal transfer. Gasless, with no on-chain transaction. | | Sub-account → parent | Internal transfer. Gasless, with no on-chain transaction. |
Withdraw from your parent margin account.
To withdraw funds held in a sub-account, transfer them back to your parent margin account first.
## Limits | Rule | Value | | - | - | | Open sub-accounts | 10 at the first volume tier, rising with your 14-day trading volume to 50. | | Copy sub-accounts | Do not count toward the limit. | | Names | Up to 64 letters, digits, `_`, `-`, `.` or `:`. | ## Closing A Sub-Account A sub-account can be closed once it is **flat**: no open positions and no resting, conditional, or TWAP orders. Its collateral returns to your parent margin account in the same step. A sub-account still in liquidation or bad debt cannot be closed. ## Agents And Copy Trading A delegated agent can be limited to a single sub-account, so it trades only that account. Following a lead trader opens a copy sub-account for that leader, named `copy:` followed by the leader's ID. Names starting with `copy:`, in any letter case, are reserved for these accounts. See [Copy Trading](/developers/copy-trading). ## Working With Sub-Accounts [Perps Collateral](/developers/perps-collateral#margin-sub-accounts) covers creating, funding, reading, and closing sub-accounts through the API and SDK. The [Margin Accounts SDK](/sdk/typescript/margin-accounts) lists every margin account method, and [Positions](/developers/positions) covers position risk.

API Surface

| Action | REST | TypeScript SDK | | - | - | - | | Create (or reopen) | `POST /api/v1/margin/sub-accounts` | `createMarginSubAccount({ subaccountKey })` | | List | `GET /api/v1/margin/accounts` | `listMarginAccounts()` | | Transfer in | `POST /api/v1/margin/sub-accounts/{marginAccountId}/collateral/transfer-in` | `transferCollateralToSubAccount(marginAccountId, amount)` | | Transfer out | `POST /api/v1/margin/sub-accounts/{marginAccountId}/collateral/transfer-out` | `transferCollateralFromSubAccount(marginAccountId, amount)` | | Close | `POST /api/v1/margin/sub-accounts/{marginAccountId}/close` | `closeMarginSubAccount(marginAccountId)` | `POST /api/v1/margin/collateral/transfer` (`transferMarginCollateral`) also moves collateral between any two of your margin accounts. Rows from `listMarginAccounts()` carry `subaccountKey` and `marginAccountState`.

Transfer Rules

* Creating, closing, and transferring share the per-user movement budget with withdrawals. Exceeding it returns `429` with `retryAfter`. * The sub-account transfer routes refuse your parent margin account with `400`; use the parent margin account routes for it. * An unknown margin account, or one you do not own, returns `404`. * A delegated agent session cannot use the sub-account transfer routes.
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