Facebook Ads Cost Per Purchase Benchmarks in United States

Introduction

The main story: cost-per-purchase in the United States ran consistently above the global benchmark across this 13-month window, with steady mid-year levels, a late-winter uptick and a pronounced spike in June 2026. Volatility was higher in the U.S. than the baseline, driven by a sharp fall into May 2026 and an outsized rebound the following month.

This analysis is based on $3B worth of advertising data from our dataset, which provides strong directional benchmarks. This analysis explores ad performance trends for All industries available in the United States compared to the global benchmark.

The story in the data

Starting in June 2025 at about $52.85 per purchase, U.S. cost-per-purchase finished the period in June 2026 at $70.05 — a roughly 33% rise from start to finish. Across the 13 months the U.S. median was $54.0 per purchase (rounded), with a low of $42.75 in May 2026 and a high of $70.05 in June 2026. By contrast the global baseline averaged about $50.12 over the same months.

Monthly movements show a mostly elevated U.S. line relative to baseline: the United States ran between roughly 1–8% above global levels for most months, with a consistent gap in the mid-single-digits until a clear outlier in June 2026 when the U.S. sat nearly 29% above the baseline. Notable moves include a decline from October 2025 (~$55.84) to November 2025 (~$47.93), a recovery into March 2026 peaking near $58.60, then a drop to the period low in May 2026 before the large June spike.

Volatility measured as average month-to-month absolute change was about $5.9 in the U.S. (≈11% of the U.S. mean), versus roughly $3.8 for the global benchmark — indicating U.S. cost-per-purchase was materially choppier year-over-year.

Seasonal and monthly dynamics

Rhythm in the series shows mid-year steadiness in summer 2025, a pullback around November, and a rebound into early Q1 2026 — with March showing a local high. The late-spring trough in May 2026 is followed by an unusually sharp jump in June 2026. Overall, the cadence includes multi-month rises and falls rather than a simple linear trend: pockets of elevated costs in late Q4 and early Q1, softer results into late spring, and a sudden June surge to close the window.

These patterns echo common seasonal pressure points in advertising calendars but manifest here as dollar swings in cost-per-purchase rather than only in volume or reach metrics.

Country vs. Global

Across the year the United States ran above the global benchmark most months — typically 3–8% higher — making U.S. cost-per-purchase “above market” by a modest margin through the period. The global trend was smoother (average monthly absolute change ≈ $3.8) while the U.S. was more volatile (≈ $5.9), especially visible in the May–June 2026 pair where the U.S. moved from a low to the period’s peak. At its narrowest gap (May 2026) U.S. costs were roughly 1–2% above global; at its widest (June 2026) the gap expanded to just under 30%.

While this brief centers on cost-per-purchase, it sits within broader Facebook Ads benchmarks that also include CPC trends, CPM analysis and CTR performance as related signals for industry ad performance and country-specific ad costs.

Understanding Facebook Ads cost-per-purchase benchmarks for All industries available in the United States helps contextualize purchasing-cost trends and compare U.S. industry ad performance to global patterns.