Marketing budgets aren't shrinking in 2026 — they're consolidating around channels that can prove their value. Connected TV is absorbing dollars from linear and paid social. AI-assisted SEO is rebounding sharply. Retail media has become a top-three line item for brands selling physical goods. And organic social is facing the steepest budget pullback of any digital channel. This data-driven guide breaks down exactly which US digital marketing channels are seeing the biggest planned increases heading into 2027, why those increases are happening, and what the losing channels have in common.