getugakuryoukin wo kakuninsuru.

It is read:

• 月額料金 → げつがくりょうきん (getsugaku ryōkin)
• を → pronounced お here, even though it is written with the kana を
• 確認する → かくにんする (kakunin suru)

So the full sentence is:

げつがくりょうきんをかくにんする。

It is a compound noun made of:

• 月額 = monthly amount / amount per month
• 料金 = fee / charge

So 月額料金 means monthly fee, monthly charge, or monthly rate.

A very literal breakdown would be something like the fee charged as a monthly amount.

を marks the direct object of the verb.

In this sentence, the thing being checked is 月額料金, so it takes を:

• 月額料金を確認する = to check the monthly fee

A simple pattern is:

• Noun + を + Verb

Examples:

• 名前を確認する = confirm/check a name
• 予定を確認する = confirm/check a schedule
• 料金を確認する = confirm/check the fee

The dictionary form is often used in Japanese for:

• headings
• menu items
• instructions
• labels in apps or websites
• neutral written statements

So 月額料金を確認する。 can sound like:

• Check the monthly fee
• To check the monthly fee
• a menu option such as Check monthly charges

If you wanted a polite full sentence in conversation, you might say:

• 月額料金を確認します。
• 月額料金を確認してください。 = Please check the monthly fee.

Grammatically, it is a suru-verb:

• 確認 = confirmation / checking
• する = to do

Together, 確認する means to confirm or to check.

This is very common in Japanese. Many nouns can combine with する to make verbs:

• 勉強する = to study
• 電話する = to call
• 説明する = to explain
• 確認する = to confirm/check

So yes, it is best understood as 確認 + する, but in practice learners often treat 確認する as a single verb meaning to confirm/check.

Japanese often leaves out the subject when it is obvious from context.

So 月額料金を確認する。 does not explicitly say:

• I check the monthly fee
• You check the monthly fee
• The user checks the monthly fee

Instead, the listener or reader figures that out from the situation.

For example:

• On a website button, it probably means Check the monthly fee
• In a plan description, it might mean to check the monthly fee
• In notes or instructions, it might imply you should check the monthly fee

This kind of omission is very normal in Japanese.

確認する has a stronger nuance than just to look at.

• 見る = to look at / to see
• 確認する = to check, confirm, make sure

So:

• 月額料金を見る = look at the monthly fee
• 月額料金を確認する = check/confirm the monthly fee

If you are verifying information, making sure it is correct, or reviewing it carefully, 確認する is the more natural word.

Both can work, but they are used a little differently.

• 月額料金 sounds like a formal set term: monthly fee / monthly charge
• 毎月の料金 literally means the fee every month and feels a bit more descriptive

In product pages, contracts, phone plans, subscriptions, and service explanations, 月額料金 is very common because it sounds concise and official.

So in this kind of sentence, 月額料金 is very natural.

Yes. 確認する often covers both ideas:

• check
• confirm
• make sure

Which English translation is best depends on context.

For example:

• 予約を確認する = confirm/check a reservation
• 内容を確認する = check/confirm the contents
• 安全を確認する = make sure it is safe

In 月額料金を確認する, English speakers often translate it as check the monthly fee, but confirm the monthly fee is also possible depending on context.

Yes, it can be.

Japanese often uses short sentences in dictionary form, especially in written contexts. Even though it may feel fragment-like in English, it is perfectly normal in Japanese for things like:

• instructions
• bullet points
• website labels
• manuals
• action lists

So 月額料金を確認する。 is a valid standalone sentence, especially in written or functional contexts.

Normally, standard Japanese writing does not use spaces between words.

So it would usually be written as:

月額料金を確認する。

The spaced version:

月額料金　を　確認する。

is probably just for learners, to make the structure easier to see.

In real Japanese text, you should expect to see it without spaces.