o-verb-stem-suru (お〜する): Kenjougo Humble Pattern for Polite Japanese

Native verbs → お (お持ちします); most する compounds → ご (ご案内します). Check a dictionary when unsure.

Both are correct humble forms for 話す (hanasu, to speak).

お話しします: Uses the polite form します (from する). This is a standard and widely used humble expression for daily business and polite interactions.

お話しいたします: Uses いたします, which is the humble verb for する (いたす). This makes it a more formal and slightly more polite/deferential expression than お話しします. It’s often chosen in very formal settings, in service industries, or when you want to convey a particularly high level of respect.

Both are good options, but お話しいたします adds an extra layer of formality.

お/ご〜します primarily implies that you are performing an action for the benefit of or directed towards the listener or another person of higher status. It shows humility about your action in relation to that person. While it literally translates to “I humbly do,” the underlying nuance is often “I will do X for you,” or “I will do X towards you respectfully.”
Example: お客様きゃくさま、荷物にもつをお持もちします。 (I will humbly carry your luggage for you.)

Both お/ご〜する and the special humble verbs are forms of Kenjougo (humble language).

• Special Humble Verbs (参る, 申す, いただく): These are irregular verbs that have unique, humble replacements for common actions (go/come, say, eat/drink/receive). They are essential to memorize as they are frequently used and sound very natural.
• お/ご〜する: This is a general pattern that allows you to make almost any verb humble, especially those that don’t have a special humble replacement. It gives you versatility to express humility for a wider range of actions. You should prioritize using the special humble verbs when they apply, and お/ご〜する for all other verbs whose actions are directed towards a superior.