# First-Time Impression Ratio

**Category:** metrics  
**Short Description:** The percentage of ad impressions that are shown to users who have never seen the ad before.  
**Last Updated:** 2026-05-16T12:00:00Z

## Definition

First-Time Impression Ratio measures the proportion of ad impressions that represent the first time a unique user has been exposed to an ad. This metric helps evaluate audience reach efficiency and frequency management by distinguishing between new audience exposure and repeat impressions.

## Formula

**Formula:** `FTIR = Unique Users Reached / Total Impressions`
**Result Unit:** %

Share of impressions delivered to users seeing the ad for the first time (≈ 1 / average frequency).

## Calculation

**Formula:** `(First-Time Impressions / Total Impressions) × 100`

**Explanation:** Divide the number of first-time impressions by total impressions and multiply by 100 to get the percentage. This shows what portion of your impressions are reaching new audience members.

### Components

- **First-Time Impressions**: Number of impressions served to users who haven't seen the ad before
- **Total Impressions**: Total number of ad impressions served

## Industry Benchmarks

| Segment | Typical Range | Median | Notes |
| --- | --- | --- | --- |
| Healthy prospecting / TOFU campaign | 50% – 70%+ | ~60% | If FTIR holds above ~67% with CPA on target, audience is not yet saturated. |
| Saturation warning threshold (TOFU) | <50% | 50% trigger | Below 50% FTIR for a top-of-funnel audience, start planning new audiences or creative refresh. |
| Acute saturation / fatigue | <30% | — | Below 30% nearly all impressions are repeats; CPA typically degrades within 2–4 weeks. |
| Retargeting / BOFU campaigns | 5% – 20% | ~10% | Retargeting pools are bounded by design — low FTIR is expected, not a problem. |
| Account-level monthly FTIR (modern Meta) | 10% – 25% (down from 60–70% pre-2023) | ~15–20% | Industry-wide compression as audiences consolidate under Advantage+ and broad targeting. |
| Frequency relationship (definitional) | FTIR ≈ 1 / average frequency | — | Frequency of 2.0 implies ~50% FTIR; frequency of 4.0 implies ~25%. |

**Sources:** Jump450, Your Marketing Partners FTIR analyses 2024, Jon Loomer Digital, Jump450, PPC Hero Delivery Insights, Your Marketing Partners, Common Thread Collective practitioner consensus, Curious Marketers Club FTIR breakdown 2024, Curious Marketers Club, March 2024, Meta Business Help Center, theonlineadvertisingguide.com glossary

## Examples

- 80% first-time impression ratio indicating efficient reach to new audiences
- Declining ratio from 70% to 40% suggesting audience saturation
- 90% ratio early in campaign shifting to 30% in later stages

## How AdSights Helps

**Tracking First-Time Impression Ratio:** When FTIR is sliding, the question is which creatives are absorbing impressions on saturated cohorts versus pulling in net-new viewers. AdSights analyzes every variant against reach, frequency, and revenue signals to flag the specific creatives driving fatigue — and surfaces which hooks, formats, and audiences are still earning first-time impressions efficiently. Teams use this to retire saturating variants before CPA degrades, brief net-new creative against patterns that historically opened up fresh reach, and rebalance spend toward variants that keep prospecting FTIR healthy. It connects creative-level diagnostics directly to the frequency-fatigue curve.

## FAQs

### What is First-Time Impression Ratio?

First-Time Impression Ratio (FTIR) is the share of a campaign's impressions that went to people seeing the ad for the first time, as opposed to repeat exposures. It's surfaced in Meta's Delivery Insights and is the cleanest single signal of whether a campaign is still reaching new people or recycling existing ones. Most other platforms expose it indirectly via reach and frequency.

### How is FTIR calculated?

FTIR = unique users reached / total impressions, over a defined window. It is the mathematical inverse of average frequency: a frequency of 2.0 implies an FTIR of roughly 50%; a frequency of 4.0 implies roughly 25%. Meta reports it natively at the daily level inside Delivery Insights. For non-Meta platforms, derive it from reach ÷ impressions.

### What's a good FTIR for prospecting?

For top-of-funnel prospecting, 50–70%+ is healthy, with ~67% commonly cited as the 'safe' line as long as CPA stays on target. Below 50% you're starting to recycle the same audience; below 30% the campaign is effectively saturated and you'll see CPA degrade in the following 2–4 weeks. For retargeting, low FTIR (5–20%) is structural and not a problem.

### What does a low FTIR mean?

A low FTIR means most impressions are repeat exposures to people who've already seen the ad. It precedes rising frequency, ad fatigue, and CPA degradation by roughly 2–4 weeks. For prospecting, it signals an exhausted audience; for retargeting it's structurally expected. The post-2023 Meta auction has compressed account-level FTIR industry-wide as audiences consolidate under Advantage+ and broad targeting.

### How do I improve FTIR?

Broaden targeting (Advantage+, lookalikes, interest-stack removal) so the optimizer can find net-new users; refresh creative so existing audiences re-enter the eligible pool; introduce new audiences or geos; and retire fatigued variants. Each lever resets the denominator (new impressions to new people) rather than just diluting frequency. Creative refresh is usually the highest-leverage move because it unblocks delivery without changing audience structure.

## Related Terms

### Component Terms

- **[Impressions](/resources/glossary/metrics/impressions)**: Base metric for calculating first-time ratio
- **[Ad Frequency](/resources/glossary/metrics/ad-frequency)**: Measures repeat exposure vs first-time impressions

### Similar Terms

- **[Reach](/resources/glossary/metrics/reach)**: Related measure of unique user exposure