Prop Firms with Japanese Support

Most overseas prop firms operate primarily in English, which is the main practical hurdle for Japanese-resident traders. The clearest exception is FinTokei, which built its product around Japanese support from launch. FTMO runs no Japanese site version (checked 2026-08-08; its former ja pages return 404), but its contact page explicitly lists Japanese — and Korean — among 21 stated support languages. That said, the English-only firms are perfectly usable with DeepL or modern browser translation — the rule documents are the only part that demands careful reading, and they are short.

What “Japanese support” actually covers

Three things matter, and firms vary on each:

• Dashboard and rule documents. FinTokei provides full Japanese. FTMO is English-only here.
• Customer support tickets. FinTokei responds in Japanese. FTMO officially states support in 21 languages including Japanese; we have not independently tested the response quality.
• Payout interface. These are numbers and standard English everywhere, so language barely matters here.

Working with English-only firms

DeepL handles prop firm rule documents accurately enough for daily use. The only places to double-check by hand are the dollar amounts (decimal-point versus comma conventions) and any time-zone references. In practice, this takes minutes per month and is not a meaningful obstacle to using The5%ers, FTMO, or the major US futures firms.

Currency handling

JPY-to-USD conversion happens automatically through Wise on withdrawal. For Japanese tax filing, the figure to record is the prevailing TTM rate at the time of receipt. Consult a licensed tax professional for the documentation standards.

Recommended Firms

FTMO — Industry standard

The free trial lets you test everything at no cost, and the 2-Step Challenge fee is refunded with your first payout after passing (no refund if you fail). See the FTMO free trial guide.

→ FTMO official

The5%ers — for building up from a small ticket

Operating since 2016. Three plans run in parallel — the one-step Hyper Growth, the two-step High Stakes and the three-step Bootcamp — with fees from $19. The profit split climbs in steps toward 100%, but a flat 3.5% is deducted from every withdrawal. On 2026-08-01 this site re-rated The5%ers from High to Low trust (★4.6→3.3) after the firm itself acknowledged payout delays in March 2026. If you use it, keep the ticket small and confirm your first payout arrives before scaling up.

→ The5%ers official (coupon “HZZS4”)

Language support for all 28 active firms in our comparison set — site translation recorded separately from stated support languages, with evidence and check dates — is published as the Prop Firm Language Support Dataset.