July 7, 20267 min read

Interior Painting Cost Calculator: 2026 US Prices per Room

Painting an interior room costs $350-$1,100 in 2026 depending on ceiling height, coats, and paint tier. This guide gives you real 2026 US prices per room and per square foot — with a calculator that includes trim, ceilings, and regional labor.

Interior painting is the highest-ROI cosmetic upgrade in a US home in 2026 — but pricing is inconsistent because contractors bid it three different ways: per room, per square foot of wall, or as a whole-house flat rate. Understanding the underlying math protects you from over- and under-paying.

2026 Interior Painting Cost per Room

Bedroom (10x12, 8-ft ceiling): $350-$650
Living room (14x18, 9-ft ceiling): $650-$1,100
Kitchen (walls only): $400-$800
Bathroom (small): $200-$450
Whole 2,000 sq ft home (walls, ceilings, trim): $4,500-$9,500

The Formula

Total = Gallons × Paint rate + Wall sq ft × Labor rate × Regional index + Trim labor

What Actually Drives Interior Paint Cost

Ceiling height — going from 8 ft to 10 ft adds ~25% labor.
Coats — dark-to-light color changes need 2-3 coats; count them.
Paint quality — premium ($55-$80/gal) covers in fewer coats, often net-cheaper.
Trim, doors, windows — trim work adds 25-40% to a room's labor bid.
Prep — patching, sanding, and priming can be a third of the total.

Paint Tier Guide (2026 US Retail)

Basic contractor-grade: $28-$35/gal — fine for closets and rentals
Mid-grade acrylic: $42-$52/gal — solid whole-home default
Premium low-VOC (Sherwin Emerald, BM Aura): $58-$78/gal
Designer / zero-VOC (Farrow & Ball, Portola): $85-$130/gal

Get a room-by-room estimate in seconds.

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