A literary agent serves one purpose: submitting your manuscript to traditional publishers who do not accept submissions from authors directly. That is the entire value proposition. If your goal is a Big Five publishing deal — Penguin Random House, HarperCollins, Simon & Schuster, Hachette or Macmillan — you need an agent, because those publishers will not read your submission without one.
If your goal is anything else — publishing on Amazon, reaching readers globally, building a royalty income stream, establishing your authority as an author — you do not need an agent and an agent cannot help you achieve it faster.
There is one scenario where a literary agent is genuinely necessary: you want a contract with a Big Five publisher or a major imprint that specifically requires agented submissions. That is a legitimate goal and a legitimate path. It is also one with a very low probability of success regardless of manuscript quality, and a timeline measured in years.
Even if you secure a Big Five deal, the economic comparison is worth understanding clearly. A first-time author advance from a Big Five publisher is typically $5,000 to $25,000 for most categories — against which your future royalties are paid until the advance is earned out. A self-published author with a professionally produced book generating 200 sales per month at $5 per sale earns $12,000 in the first year with no advance to earn out, no rights surrendered and no agent commission deducted. The maths shift further in favour of self-publishing with every book added to the catalogue.
Pursue a literary agent if and only if a Big Five deal is specifically your goal and you are prepared for a multi-year process with uncertain outcome. For every other publishing goal — commercial sales, reader reach, royalty income, authority building, business credibility — self-publishing without an agent produces faster results with better economics and more creative control.
