Prop firms (proprietary trading firms) sell funded accounts: pass an evaluation challenge, get capital to trade with, keep 80–90% of profits. For algorithmic traders running ONNX-based EAs on MT5, prop firms are the path from "I have a model that works in backtest" to "I have meaningful capital deployed without risking my own money."

The catch is rules. Each firm has different policies on EAs, news trading, max position size, news lockouts. Before applying anywhere, verify your EA's behavior matches their rules — otherwise you'll fail the evaluation on technicalities. This article compares the four most algo-friendly firms.

The comparison table

FirmEA allowedMax accountProfit splitAffiliate cookie
FTMOYes (most EAs)$400,00080–90%8–20% tiered
FundedNextYes (most EAs)$300,00080–95%12–18%, 90d cookie
The5ersYes (with rules)$200,000 funded50–75% (instant) / up to 80%~10%
Hola PrimeYes$200,000Up to 90%Tiered

FTMO — the establishment

FTMO is the oldest (founded 2015) and largest prop firm; their rules and platforms have been refined over years. For ONNX-EA traders specifically:

Full rule deep-dive: FTMO EA rules.

Try FTMO → (affiliate link)

FundedNext — aggressive payouts

FundedNext is FTMO's most direct competitor with more aggressive terms — higher profit splits, more generous accounts, faster payout cycles. For algo traders:

Rule deep-dive: FundedNext EA rules.

Try FundedNext → (affiliate link)

The5ers — instant funding option

The5ers differentiates with an instant funding option — pay upfront, skip the evaluation, start trading immediately with a smaller account. Lower profit split (50–75%) but no challenge to fail.

Rule deep-dive: The5ers EA rules.

Try The5ers → (affiliate link)

Hola Prime — newer entrant

Hola Prime entered the market in 2024 and has grown aggressively. Their pitch is high profit splits (up to 90%) and competitive evaluation rules. Less of a long track record than FTMO/FundedNext, so we'd suggest starting with a small account to test their payout reliability.

Try Hola Prime → (affiliate link)

How to pick

Many algo traders run the same EA on accounts at 2–3 firms simultaneously, diversifying away from any single firm's payout/rule risk. That's a reasonable strategy if your EA's edge is real.