Totoo ba iyan?

In Filipino, you often do not need a separate word for is/are in simple sentences like this.

• Totoo iyan. = That is true.
• Literally, it is more like True that.

This is very normal in Filipino. Adjectives and nouns can act as the predicate without a copula like English is.

Ba is a question particle used for yes/no questions.

It turns a statement into a question:

• Totoo iyan. = That is true.
• Totoo ba iyan? = Is that true?

So ba does not mean is by itself. Its job is to mark the sentence as a question.

Because ba is a second-position clitic. That means it usually comes after the first word or first phrase of the sentence.

So:

• Totoo ba iyan? is correct and natural.

Not:

• Ba totoo iyan?

This pattern is very common in Filipino.

Totoo means true or real, depending on context.

In Totoo ba iyan?, it means true:

• Totoo iyan. = That is true.

You may also see it in other sentences like:

• Totoo ba ang balita? = Is the news true?

Iyan is a demonstrative word meaning that or that one.

The basic contrast is:

• ito = this (near the speaker)
• iyan = that (near the listener, or something just mentioned)
• iyon = that over there (farther from both speaker and listener)

So in Totoo ba iyan?, iyan is the natural choice for that.

Yes. In everyday speech, iyan is very often shortened to 'yan.

So these mean the same thing:

• Totoo ba iyan?
• Totoo ba 'yan?

The shorter form sounds more casual and conversational.

It is generally neutral and very natural.

• Totoo ba iyan? = normal everyday Filipino
• Totoo ba 'yan? = more casual
• Totoo po ba iyan? = more polite/respectful

If you are speaking to someone older, a stranger, or someone you want to address politely, adding po is a good idea.

Yes, that is possible, but it sounds more formal, marked, or stylistic.

• Totoo ba iyan? = the most natural everyday way
• Iyan ba ay totoo? = grammatical, but less common in ordinary conversation

Learners should treat Totoo ba iyan? as the default pattern.

A rough guide:

• totoo ≈ toh-TOH-oh
• iyan ≈ ee-YAHN

A few notes:

• totoo has stress on the second syllable.
• Many speakers make a slight break between the last two o sounds in totoo.
• iyan is often reduced in speech to 'yan.

Usually yes, a questioning intonation is natural, but the main grammatical marker is still ba.

So even without strong English-style inversion, the sentence is clearly a question because of:

• ba
• the question mark in writing
• normal questioning intonation in speech

Not exactly.

• Totoo ba iyan? means Is that true?
• Talaga? or Talaga ba? is closer to Really?

So if you are directly asking whether something is true, Totoo ba iyan? is the better choice. If you are reacting with surprise, Talaga? is often more natural.

Yes. It is very flexible. You can use Totoo ba iyan? when someone tells you:

• a rumor
• a piece of news
• a personal story
• a surprising claim

It is a general way to ask whether what was just said is true.