Best overall: TCL 5-Series (S555) 55″ (~$379) — QLED, Google TV, solid HDR. Best budget: Hisense A6K 55″ (~$299) — Dolby Vision, hands-free Google Assistant. Best for gaming: Hisense U7N 55″ (~$399 on sale) — 144Hz, ALLM, VRR.
4K smart TVs under $400 have crossed a quality threshold in 2026 where genuine compromises are rare. TCL and Hisense have driven the Chinese manufacturing advantage into the mainstream, delivering QLED panels, Dolby Vision, and Google TV smart OS at prices that Samsung and LG can’t match below $500.
Best Smart TVs Under $400 — 2026 Picks
1. TCL 5-Series (S555) 55″ — ~$379 | Best Overall
The TCL 5-Series brings QLED (quantum dot LCD) to the budget category, adding wider color gamut and better brightness compared to standard LCD TVs at the same price. The S555 runs Google TV — one of the best smart TV operating systems with built-in Google Assistant, Chromecast, and access to the full Google Play store for streaming apps.
The 55″ panel handles HDR10, HDR10+, and Dolby Vision content. Local dimming (zone dimming with 16–32 zones depending on model variant) improves contrast compared to budget full-array TVs. For movies and streaming, the S555 consistently delivers picture quality that tests ahead of competing TVs at the same price. Peak brightness tops out around 400 nits — sufficient for typical room conditions but not a match for bright daylight rooms.
2. Hisense A6K 55″ — ~$299 | Best Budget Pick
The Hisense A6K is the lowest-cost 55″ 4K TV we’d recommend without significant reservations. Dolby Vision IQ, HDR10+, and hands-free Google Assistant via built-in mics. The A6K runs Google TV, gives you full app support, and comes with two HDMI 2.1 ports for 4K/60fps device connections.
Picture quality is behind the TCL 5-Series — the A6K lacks local dimming and QLED color, so blacks aren’t as deep and colors aren’t as saturated. For a bedroom TV or secondary living room TV, the difference is minimal. For your primary TV in a dark room where picture quality matters, spend the extra $80 for the TCL.
3. Hisense U7N 55″ — ~$399 (on sale) | Best for Gaming
The Hisense U7N is typically a $499–$549 TV that regularly goes on sale under $400 at Amazon, Best Buy, and Walmart during promotional periods. When you find it at $379–$399, it’s one of the best value gaming TVs in existence. The U7N features a native 144Hz panel (not interpolated), ALLM (auto low latency mode), VRR (variable refresh rate), and four HDMI 2.1 ports — specs you’d typically pay $800+ for from Samsung or LG.
Input lag drops to ~10–14ms in game mode, which is fast enough to be imperceptible. For PS5, Xbox Series X, or PC gaming on a living room TV, the U7N is an extraordinary deal when on sale. Set a price alert and buy it at the right moment.
Frequently Asked Questions
Is a 55″ or 65″ better value under $400?
At the $400 budget, 55″ models offer significantly better panel quality than 65″ models at the same price. A 65″ TCL A4 will underperform a 55″ TCL 5-Series noticeably in HDR contrast and color. Unless you’re in a large room and viewing distance matters more than picture quality, the 55″ with better specs is the smarter choice under $400.
Should I buy a smart TV or use an external streaming stick?
If your TV runs Google TV or Roku OS (both are good platforms), the built-in smart system is sufficient. An external Chromecast with Google TV or Fire TV Stick 4K Max only becomes worth adding if your TV’s built-in OS is slow, lacks your preferred apps, or stops receiving updates. The TCL and Hisense picks above run Google TV — a solid modern platform with no need for external supplement.
Final Thoughts: The TCL 5-Series S555 at $379 is the best all-around 4K smart TV under $400 in 2026 — QLED color, local dimming, and Google TV in a package that would have cost $600+ four years ago. For gaming specifically, hold out for the Hisense U7N on sale. For a strict budget under $300, the Hisense A6K is a respectable entry point.
Find the Best Smart TV Deal Today
TV prices fluctuate with sales events — check Amazon for current pricing.
Prices shown are approximate as of May 2026. TV models and availability change seasonally — verify before purchasing.
