Looking for an office chair under $100 that offers both affordability and ergonomic support? An effective office chair needs to have adequate lumbar support, a good seat, and sturdy build. Whether you are creating a home office or just need an affordable solution for working long hours at your desk, there are wonderful options. We've covered the top chairs that provide adjustable features, heavy-duty construction, and durable comfort—all at an affordable price. Browse our best options and find the ideal chair to keep you cozy while working.