What is the best perk to offer for a customer review?

First, separate platforms. Google, Yelp, and TripAdvisor prohibit any incentive tied to a review — you cannot legally offer one, and trying will get your business profile suspended. For those platforms, the answer is: ask better and more often, not pay more.

For Instagram, TikTok, Facebook, and other content platforms where incentives are legal (with disclosure), the perk structure matters more than the amount. Three formats, ranked by typical ROI:

1. Free low-COGS item. A coffee shop offering a free latte for an Instagram story has a true cost of ~$0.80 (milk + syrup + cup). Perceived value to the customer: $5–$6. Customer gets a great deal, you get organic reach with great unit economics. This is the highest-ROI structure for most independent F&B and retail businesses.

2. Tiered discount (follower-based). Default 10–15% for anyone, scaling to 25%+ for customers with 10K+ followers. A single campaign serves both your regulars (who get a modest discount but compound through repeat visits) and your higher-reach customers (who deliver outsized organic reach for a one-time bigger discount).

3. Flat percentage discount. Simple, easy to communicate, but loses to the other two on margin and on engagement. Use as a fallback when free items aren't operationally feasible (e.g., service businesses, professional services).

What to avoid: • Cash payouts — feel transactional, often run afoul of platform rules • Gift cards over $25 — IRS reporting threshold for some structures • Reward stacking with existing loyalty programs without clear rules — confuses customers and inflates redemption

Across 100+ campaigns we've seen, free-item offers convert at 2–3x the rate of equivalent-value percentage discounts and produce content with measurably higher engagement (the customer's followers see they got something special, not just a coupon).