Ask the Author: When does a novel become YA? Before you write it—or after?

Dear Mandy,

When do you decide if your novel is YA? Do you decide before you start writing or after you are done?

Answer: One of the questions writers ask constantly is whether a novel “counts” as Young Adult fiction. Sometimes the answer is obvious from page one. Other times, writers finish an entire manuscript before realizing they may have written for a different audience than they originally intended.

The truth is that YA is both a category and a marketing designation, and those two things do not always align perfectly. At the most basic level, a Young Adult novel is written for teen readers, generally between the ages of twelve and eighteen. In publishing, though, that definition becomes much more flexible than people expect. A huge percentage of YA readers are adults, and many books with teen protagonists are actually shelved in adult fiction. That’s why YA is not determined by a single factor.

People often assume that if the protagonist is a teenager, the book is automatically YA. That can certainly point a novel in that direction, but it is not a rule. Plenty of adult novels center teenage characters. The Hill, for example, follow a young protagonist but is undeniably adult fiction. Meanwhile, books like The Hunger Games or The Hate U Give are firmly YA despite tackling extremely serious subject matter.

Voice is usually the clearest indicator. YA fiction tends to feel immediate and emotionally close to the protagonist. The narration often prioritizes discovery, identity, belonging, friendship, first love, and the terrifying feeling that every decision could reshape your future. Even when the plot involves murder, dystopia, horror, or fantasy warfare, the emotional lens is frequently rooted in the experience of becoming an adult.

Adult fiction generally creates more distance. The themes may focus more heavily on regret, marriage, careers, parenting, long-term consequences, aging, or societal systems rather than personal identity formation.

Content also plays a role, though not in the simplistic way many people think. YA can absolutely include violence, trauma, sex, addiction, grief, and other difficult topics. What matters more is how those themes are approached. A YA novel may explore dark material through the perspective of a young person processing it for the first time. Adult fiction may examine the same issues with more graphic detail, more emotional complexity tied to adulthood, or a more cynical worldview.

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And then there is the publishing side of things. Books are categorized partly because bookstores and libraries need to know where to shelve them. Agents, editors, librarians, booksellers, and marketing teams all think about audience positioning. Sometimes a manuscript sits right on the border between YA and adult, and the eventual category comes down to where publishers believe the book will succeed commercially.

That’s why writers should decide on their target audience before they begin writing whenever possible. You can change direction later, of course, but knowing your audience early helps shape countless creative decisions. A writer targeting adult readers may naturally approach pacing, prose style, and thematic depth differently than a writer aiming for teens.

Some of the decisions affected by audience include:

• The age of the protagonist
• Narrative voice and emotional immediacy
• The complexity of prose and sentence structure
• The level of graphic content
• Romantic dynamics and relationship focus
• The themes emphasized throughout the novel
• How much independence the protagonist realistically has
• The role adults play in the story
• Pacing and chapter structure
• The overall tone and worldview of the book

For example, YA novels often move faster and maintain tighter emotional focus because they are designed to keep younger readers immersed. Adult fiction may spend more time on introspection, multiple timelines, or broader social commentary. None of this means one category is easier or more valuable than the other. They simply operate differently and speak to readers at different stages of life.

The important thing is understanding that YA is not just “a book about teenagers.” It is a combination of voice, perspective, thematic focus, audience expectations, and market positioning. The earlier a writer understands who they are writing for, the easier it becomes to make consistent storytelling choices throughout the novel.

What do you think makes a novel feel distinctly YA rather than adult fiction? Have you ever read a book that felt caught between the two categories?

This column is part of an ongoing Ask the Author series, where I answer questions from writers and readers about reading, writing, storytelling, and the creative process. If you have a question you’d like me to tackle in a future post, you can submit it through my contact page.

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