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Free Blended ROAS Calculator

Calculate true marketing efficiency across all channels — also called MER. Cuts through platform attribution noise.

Use this free Blended ROAS / MER calculator to find your true marketing efficiency ratio across all paid + organic + email channels. The most reliable metric for DTC scaling decisions.

✓ Free to use✓ No signup✓ Built for DTC brands✓ Updates in real time

📊 Your Marketing Numbers

Total Revenue

All revenue from this period

Total Marketing Spend

Paid ads + email + content + agency fees

Meta Ad Spend (Optional)

For platform ROAS comparison

Meta Reported Revenue (Optional)

From Meta Ads Manager

Gross Margin % (Optional)

For break-even MER calculation

📈 Your MER Analysis

Blended ROAS / MER

4.0x

Total Revenue ÷ Total Marketing Spend

Meta Platform ROAS

4.0x

Attribution Gap

Marketing % of Revenue

25%

Break-Even MER

2.0x

Gross Profit (After Marketing)

$125K

Net Marketing Efficiency

2.0x

Platform ROAS lying to you?

TGM manages $314M+ in DTC ad spend across 200+ brands

We scale DTC brands using Blended ROAS / MER, not platform-attributed numbers — the only metric that reflects reality.

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Trusted by 200+ DTC brands

Blended ROAS / MER formula: Total Revenue ÷ Total Marketing Spend.
Healthy DTC MER: 3-5x at scale. Below 2x = losing money. Above 5x usually means under-investing.
Why blended > platform ROAS: Platform numbers double-count conversions seen by Meta + Google + email. Blended cuts through.
iOS 14.5 broke platform attribution. Many brands now report 30–50% lower platform ROAS than reality — MER is unaffected.
Use MER for scaling decisions. Use platform ROAS only for in-channel optimization.

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DTC Blended ROAS / MER Benchmarks by Stage

Healthy MER ranges by revenue stage. MER drops naturally as brands scale because email + organic + retention drive more revenue at near-zero marginal cost.

Revenue Stage	Median MER	Top Quartile	Best in Class
$0–$50K/mo	2.5x	3.5x	5x+
$50K–$200K/mo	3.0x	4.0x	5.5x+
$200K–$500K/mo	3.5x	4.5x	6x+
$500K–$2M/mo	4.0x	5.0x	7x+
$2M+/mo	4.5x	6.0x	8x+

Source: TGM client portfolio across 200+ DTC accounts. MER lifts as brands mature because email + retention compounds. Below 2x MER = losing money on marketing.

MER vs. Platform ROAS vs. CAC vs. LTV:CAC

Metric	What it measures	Formula	When to use it
MER (Blended ROAS)	True revenue per total marketing dollar	Total Revenue ÷ Total Marketing Spend	Scaling decisions, true profitability
Platform ROAS	Revenue per channel ad dollar (attribution-noisy)	Channel Revenue ÷ Channel Spend	In-channel optimization only
CAC	Cost per new customer	Marketing Spend ÷ New Customers	Unit economics
LTV:CAC	Lifetime value vs acquisition cost	LTV ÷ CAC	Long-term scaling

MER is the only ROAS metric that doesn’t double-count conversions across platforms. Use it as your north star.

What Is Blended ROAS / MER and Why Does It Matter?

Blended ROAS — also called MER (Marketing Efficiency Ratio) — measures total revenue divided by total marketing spend across ALL channels. It cuts through the attribution noise that makes platform-reported ROAS unreliable. Meta, Google, TikTok, and email each claim credit for the same conversion when a customer sees ads on multiple platforms or opens an email. Adding those platform-reported numbers together over-counts revenue by 30–100%. MER fixes this by using actual top-line revenue from your CRM / Shopify divided by every dollar you spent on marketing.

The MER Formula

MER = Total Revenue ÷ Total Marketing Spend

Example: $500,000 monthly revenue ÷ $125,000 total marketing spend = 4.0x MER. The calculator above also models break-even MER, attribution gap vs Meta-reported ROAS, and net marketing efficiency after gross margin.

How MER Connects to Scaling and Profitability

MER is the only ROAS metric you can scale to. Above 4x MER, you have margin headroom to push spend. 2–3x MER is treadmill territory — spend covers itself but doesn’t generate growth runway. Below break-even MER (1 ÷ gross margin), every marketing dollar destroys value. The mistake most DTC brands make: scaling based on platform ROAS (which inflates 30–100% from double-counting) instead of MER. Brands that scale on platform ROAS often hit profitability cliffs at $500K+/month when the attribution math finally catches up.

What Is a Good Blended ROAS for DTC Brands?

Stage-dependent. Early DTC ($0–$200K/mo): 2.5–3x MER healthy, with brand still validating offers. Scaling DTC ($200K–$2M/mo): 3.5–5x MER with email + retention compounding. Mature DTC ($2M+/mo): 4.5x+ MER as owned channels take more weight. Below break-even MER (1 ÷ gross margin) = losing money on every order. Above 5x at scale = often under-investing in growth (could spend more, accept lower MER, grow faster).

Diagnose: why is your MER low?

Run through these in order. The first “yes” usually points at the highest-leverage fix.

If you don’t have lifecycle email + SMS

Without retention, every order needs paid acquisition. Build Klaviyo welcome + abandoned cart + post-purchase. Email/SMS typically lifts MER 30–50% by adding revenue at near-zero marginal cost.

If your Meta is > 70% of paid spend

Diversification needed. Add Google Search (5–10x branded ROAS), TikTok, YouTube/CTV. Same total spend across multiple channels typically lifts blended MER 25–40%.

If branded Google Search is unfunded

You’re leaving 5–10x ROAS on the table. Branded Search is the highest-MER channel. Always fund first.

If your contribution margin is below 30%

Even great MER can’t fix bad unit economics. Use our Contribution Margin Calculator to find the bottleneck.

If you’re scaling on platform ROAS, not MER

Platform ROAS inflates 30–100% via double-counting. Switch scaling decisions to MER. Many "profitable" platform-ROAS brands lose money on real MER.

If creative refresh is > 14 days

Creative fatigue raises CPM 25%+ and tanks blended MER. Refresh hooks weekly on top spenders.

10 ways to lift Blended ROAS / MER this quarter

Build lifecycle email + SMS first. +30–50% MER lift typical when adding Klaviyo flows.
Fund branded Google Search. 5–10x ROAS — the highest-MER channel.
Diversify beyond Meta. Adding Google + TikTok at scale lifts blended MER 25–40%.
Refresh creative every 14 days. Frequency >3.5/wk tanks blended MER 25%+.
Cut bottom 20% of ad sets weekly. Reallocates to top performers; lifts MER 10–20% in 7 days.
Add a referral program. Referred customers have 25%+ higher LTV at 60% lower CAC, lifting MER.
Build a subscription / replenish offer. Subscription cohorts have 2–3x LTV with no new ad spend.
Lift AOV with bundles + free-ship threshold. +10–20% AOV = +10–20% MER on the same spend.
Track MER weekly, not monthly. Monthly averages hide week-3 fatigue spikes.
Cap Meta retargeting at 15–25% of paid. Over-allocating starves cold prospecting and inflates platform ROAS while flattening MER.

What this calculator cannot tell you

Channel-level efficiency. MER is blended — doesn’t isolate which channel drove revenue. Use platform ROAS for in-channel optimization.
True incrementality. Some revenue would happen via direct / organic without paid. Holdout tests reveal real lift.
Cohort-level MER. New-customer MER vs returning-customer MER differ dramatically. Track separately.
Q4 / promotional impact. Heavy promo periods inflate revenue but compress margin. MER without margin context misleads.

Blended ROAS / MER glossary

MER (Marketing Efficiency Ratio): Total Revenue ÷ Total Marketing Spend. The most accurate ROAS metric for DTC scaling.
Blended ROAS: Same as MER. The "blended" word emphasizes multiple channels combined.
Platform ROAS: Revenue claimed by a single platform ÷ that platform’s ad spend. Inflated by attribution overlap. Use our ROAS Calculator.
Break-Even MER: 1 ÷ Gross Margin. Below this, marketing destroys value. A 50% margin brand has 2.0x break-even MER.
Attribution Gap: Difference between what platforms report vs actual revenue. Often 30–100% over-attribution.
iOS 14.5 / ATT: Apple privacy update that broke platform attribution. Drove DTC brands toward MER.
CAPI (Conversions API): Server-side tracking. Restores some platform attribution but doesn’t fix double-counting.
MMP (Multi-touch Mediation): Tools like Hyros, Northbeam, Triple Whale that track customer journeys across channels.
Net Marketing Efficiency: Gross profit (after margin) per marketing dollar. MER × Margin. The truest profitability number.
Marketing % of Revenue: Total Marketing Spend ÷ Total Revenue. Healthy DTC: 15–30%. Inverse of MER.

We scale 200+ DTC brands using MER, not platform ROAS

If your platform ROAS looks great but bank revenue tells a different story, we’ll fix the attribution gap — calc-driven, free, no obligation.

Book a Free MER Audit →

Frequently Asked Questions

How is Blended ROAS / MER calculated?

MER = Total Revenue ÷ Total Marketing Spend. Example: $500K monthly revenue ÷ $125K total marketing spend (paid + email + agency) = 4.0x MER. The calculator above also models attribution gap, break-even MER, and net efficiency.

What is a good Blended ROAS for DTC?

Stage-dependent. $0-$50K/mo: 2.5x. $200-$500K/mo: 3.5-4.5x. $2M+/mo: 4.5-6x. Below 2x = losing money on marketing. Above 5x at scale often signals under-investment.

Why is Blended ROAS better than platform ROAS?

Platform ROAS double-counts conversions seen by multiple platforms. Meta + Google + email each claim credit for the same sale. Blended ROAS / MER uses your actual revenue and total spend, eliminating attribution noise.

What's the difference between MER and ROAS?

ROAS is platform-attributed (Meta/Google/TikTok report their own). MER (Marketing Efficiency Ratio) is total revenue ÷ total marketing spend across ALL channels. MER is the only number that doesn't lie about scale.

How did iOS 14.5 affect MER?

iOS 14.5 broke platform attribution by ~20-40% — conversions stopped being tracked back to ads. PLATFORM ROAS dropped artificially while MER stayed accurate (it uses your CRM revenue). This is why MER is the right scaling metric post-iOS 14.5.

Should I include email and content in MER spend?

Yes. MER captures TOTAL marketing spend — paid ads + email platform + content + agency fees + design. Excluding owned-channel costs makes MER artificially high. Total marketing investment ÷ total revenue = true MER.

What is break-even MER?

1 ÷ Gross Margin. A 50% margin brand needs 2.0x MER to break even. Below that, marketing destroys value. Aim for break-even MER + 30-50% buffer for healthy scale.

How does MER differ at scale vs early stage?

Early-stage brands (under $200K/mo) typically run 2.5-3x MER while building brand. Scaling brands ($200K-$2M/mo) hit 3.5-5x as email + retention compound. Mature brands ($2M+/mo) often run 4.5-6x because owned channels do more lifting.

Can I use MER for individual channel optimization?

No. Use platform ROAS for channel-level decisions (Meta optimization, Google bidding). Use MER for total-spend decisions and scaling commitments. They serve different purposes and shouldn't be confused.