MAM and PAMM Setup for MetaTrader 4 and MetaTrader 5 Brokers

What is a MAM and PAMM forex account solution?

A MAM or PAMM solution is software that lets one money manager trade for many investors at a brokerage, while the system allocates each trade, profit, loss and fee back to every investor automatically. On MetaTrader it is normally a third-party server plugin plus web portals for the broker, the manager and the investors.

The two acronyms describe different mechanics:

• MAM (Multi-Account Manager): the manager trades a master account and the plugin places matching trades in each investor's own sub-account, sized by an allocation rule. Every investor sees real positions in their own terminal.
• PAMM (Percentage Allocation Management Module): investor money is aggregated, the manager trades one account, and profit and loss are split in proportion to each investor's share of the pool.

MetaQuotes' own news archive shows how long these modules have existed on MT5. In 2016 it announced Plugit's MT5 module, describing it as follows:

"MetaTrader 5 PLG Multi-Asset Management Module (MAMM) is a special server-side plugin with a web interface designed for brokers and professional asset managers."— MetaTrader 5 news, 13 October 2016 (accessed October 2026)

In 2018 MetaQuotes reported that Brokeree had released PAMM for MetaTrader 5 and that "the solution works with aggregated funds". Both are vendor products. MetaTrader 5 itself does not ship a MAM; the product MetaQuotes sells for fund management is a separate one, MetaTrader 5 for hedge funds, covered in the comparison below.

FXSUPPORT does not sell its own MAM or PAMM module. We install, configure, integrate and support the module the broker licenses, as part of our MetaTrader plugin and MT5 support work.

How do allocation methods work? A worked example

An allocation method is the rule that turns one master trade into a size for each investor. The same 1.00-lot trade produces different investor lots under each method, and rounding to the symbol's volume step always leaves something to handle.

Example: a manager buys 1.00 lot EURUSD on the master account. Three investors are linked: A has $10,000 equity, B $30,000 and C $40,000 (total $80,000). The symbol's minimum volume and step are 0.01 lot.

In the first row the rule rounds down. With round-half-even instead, A gets 0.12 and B 0.38, and the total is 1.00 again. Either is acceptable if documented: over thousands of trades a rounding bias moves money between investors. Decide in advance whether the residual stays on the master account, goes to the largest investor or is not traded at all.

Plugit's 2016 MT5 module named three methods of this kind, "Equity Lot Ratio (MAM), Equity Cash Ratio (PAMM) and Equal Volume"; its current YOONIT page lists "Lot, Percentage, or Equity-based" allocation. Names differ between vendors, so map each vendor's labels to the rules above before comparing.

The same trade under PAMM

Under PAMM the manager's 1.00 lot is one position on the pooled account. If it closes with +$400, the split follows the shares: A 12.5% = $50, B 37.5% = $150, C 50% = $200. Nothing is rounded at trade level; precision matters instead at rollover, when deposits, withdrawals and fees change each investor's share.

Edge cases your configuration must answer

• Partial fills: if only 0.60 of the 1.00 lot fills, each investor's size should be recalculated from the filled volume, not the requested one.
• Partial closes: closing 0.40 of the master position must close the same proportion in every sub-account.
• Pending orders and SL/TP: decide whether these are copied, and what happens when a sub-account's stop level differs from the master's.
• Mid-trade deposits and withdrawals: decide whether open positions are resized, kept as they are or settled at the next rollover.

How to set up MAM or PAMM on MT4 or MT5, step by step

A clean launch takes ten steps: business rules, platform checks, vendor choice, test server, groups and permissions, allocation, fees, portals, acceptance testing and go-live with monitoring. Skipping the test-server stage is the most common cause of incidents.

1. Write the business rules. Model (MAM, PAMM, copy trading or several), who may become a manager, minimum investment, fee types, rollover times, withdrawal rules, and what investors see.
2. Check the platform. MetaQuotes states that "The MetaTrader 4 trading platform licenses are no longer available for purchase", so new brokers build on MT5; existing MT4 brokers should plan the module with their MT4 to MT5 migration in mind. MT5 supports netting and hedging accounting, MT4 hedging only; confirm which mode the module supports for master and investor groups.
3. Shortlist and license a module. Compare allocation methods, fee engine, rollover options, portals, API, CRM integration and MT4/MT5/multi-server support.
4. Install on a test server first. Deploy the plugin on a demo or staging MT4/MT5 server that mirrors production symbols, sessions, commissions and swaps. Record plugin version and the MetaTrader build.
5. Create groups and permissions. Separate groups for master accounts, investor accounts and fee-collection accounts; leverage, margin and stop-out per group. MT5 allows unlimited account groups, MT4 up to 512. Give the plugin and portals only the Manager/Server API rights they need (see MetaTrader API integration).
6. Configure strategies and allocation. Link master and investor accounts, set the method, rounding rule, residual handling, minimum volume, partial-close and pending-order behaviour, and SL/TP propagation.
7. Configure fees and rollover. Performance and management fees, HWM rules, fee periods, payout accounts and the rollover schedule for PAMM deposits and withdrawals.
8. Connect portals and CRM. Manager and investor portals, single sign-on, branding where the module allows it, and deposit/withdrawal flows through your forex CRM.
9. Run acceptance tests. Use the test plan in the next section and sign off in writing.
10. Go live in stages and monitor. Start with one or two managers, small investor counts and daily reconciliation; widen after a stable period.

 Manager terminal
       |
       v
 MT4/MT5 server --- MAM/PAMM server plugin --- Manager / investor portals
       |                    |                         |
       |              allocation + fees           CRM / payments
       v                    v
 Liquidity / bridge   Investor sub-accounts (MAM)
                      or pooled account + shares (PAMM)

Which risk controls protect investors and the broker?

Risk controls in a MAM/PAMM setup work at three levels: the investor, the strategy and the broker.

Vendors expose these under different names; B2Broker's PAMM settings list, for example, "Max risk ratio", "Stop-loss limits", "Drawdown protection" and "Daily exposure cap". Aggregate MAM/PAMM exposure also belongs in your dealing desk's view: FXSUPPORT's risk operations include end-of-day reports and toxic-flow lists, and managed-account flow can be added to them.

PLUGIT, Brokeree, B2Broker and other MAM/PAMM vendors

Most brokers license a module rather than build one. The vendors below publish MAM, PAMM or copy-trading products for MetaTrader; they are technologies we work with, not partners, and FXSUPPORT is not affiliated with any of them or with MetaQuotes.

• PLUGIT (YOONIT MAM/PAMM): describes allocation by "Lot, Percentage, or Equity-based" methods, a permission-based money manager portal and fee types including performance, registration and management fees. Its FAQ states it is "Currently integrated with cTrader, MetaQuotes MT4 and MT5" and that "YOONIT is a cloud based solution". Contact PLUGIT directly for licensing.
• Brokeree PAMM: MT5 version announced by MetaQuotes in June 2018; Brokeree's site lists MT4, MT5 and cTrader, cross-server investment and CRM integrations.
• B2Broker B2COPY PAMM: shows proportional splitting with virtual positions, scheduled or manual rollover and configurable high-water marks.

Whichever vendor you choose, FXSUPPORT can install, integrate, test and support it. When changing modules, plan a parallel run: open strategies, investor shares and HWM values must carry over exactly.

Frequently asked questions