ROAS Explained: How to Measure Facebook Ads Success for Bangladesh Ecommerce
If you run an ecommerce brand in Bangladesh and you are spending real money on Facebook Ads, ROAS is the single most important number on your dashboard. Yet most founders I work with either don't track it at all, or worse — track it incorrectly and make scaling decisions based on a vanity number.
This guide explains exactly what ROAS is, how it works for Bangladeshi ecommerce specifically, what a "good" ROAS looks like in 2026, and the rules I use to decide when to scale. If you want a faster path, my free ROAS calculator does the math for you in 30 seconds.
What is ROAS?
ROAS stands for Return on Ad Spend. It is the ratio of revenue generated to ad spend:
ROAS = Revenue from Ads ÷ Ad Spend
If you spend ৳50,000 on Meta Ads and generate ৳200,000 in attributed sales, your ROAS is:
200,000 ÷ 50,000 = 4.0x (or 400%)
That is it. Simple math, but the devil is in which revenue and which spend you count.
The Three ROAS Numbers You Need to Know
1. Platform ROAS (what Meta reports)
The ROAS shown inside Ads Manager. Based on Pixel + Conversions API attribution windows (usually 7-day click + 1-day view).
Problem: Meta self-reports its own contribution — it overstates the real impact, sometimes by 20–60%.
2. Blended ROAS / MER (the boardroom number)
Total revenue (Shopify, WooCommerce, or your POS) divided by total ad spend across all channels.
MER = Total Revenue ÷ Total Ad Spend
This is the only number that actually reflects business reality. If your platform ROAS says 4x but your MER is 1.6x, your ads are not doing what Meta says they are.
3. Breakeven ROAS (the survival number)
The minimum ROAS you need to not lose money on each order. It depends on your gross margin (AOV minus COGS minus shipping).
Breakeven ROAS = 1 ÷ Gross Margin %
If your gross margin is 40%, your breakeven ROAS is 1 / 0.40 = 2.5x. Below 2.5x, every order loses money.
You can compute all three for your store in seconds with the free breakeven ROAS calculator.
ROAS Benchmarks for Bangladesh Ecommerce (2026)
Based on accounts I have run or audited across Dhaka, Chattogram, and Sylhet:
| Category | Typical Platform ROAS | Typical MER |
|---|---|---|
| Fashion / Apparel (low ticket) | 2.5–4.5x | 1.4–2.2x |
| Beauty / Skincare | 3.0–6.0x | 1.8–3.0x |
| Electronics / Gadgets | 1.8–3.5x | 1.2–1.8x |
| Food / FMCG | 2.5–5.0x | 1.5–2.4x |
| Furniture / Home | 2.0–4.0x | 1.4–2.2x |
| Premium / Luxury | 1.5–3.0x | 1.2–1.8x |
These ranges are healthy targets, not guarantees. New brands without retargeting funnels typically run 30–50% lower than these benchmarks until they build momentum.
How to Calculate ROAS Correctly
Step 1: Set up clean conversion tracking
- Install the Meta Pixel and the Conversions API on your store (Shopify and WooCommerce make this easy).
- Verify your domain in Business Manager.
- Confirm Purchase events fire with the correct value (BDT, not USD).
Step 2: Define your attribution window
For Bangladesh ecommerce I default to 7-day click + 1-day view. Shorter windows under-attribute; longer windows over-attribute.
Step 3: Pull both numbers weekly
- Platform ROAS from Meta Ads Manager.
- MER from your store: total revenue ÷ total ad spend across all channels (Meta + Google + TikTok + influencer).
Step 4: Track the ratio over time
Healthy: Platform ROAS / MER ≈ 1.2–1.5x. Red flag: Platform ROAS / MER > 2.0x. Meta is taking credit for sales you would have got anyway.
What Does a Good ROAS Actually Look Like?
Forget online "X is a good ROAS" claims. The real answer is contextual:
- Good = above your breakeven, with enough margin left to fund growth.
- Better = above breakeven AND scaling without ROAS collapsing.
- Best = a clear gap between platform ROAS and MER that is shrinking over time (means your ads are becoming truly incremental).
A 2.0x ROAS on a 60% margin business is excellent. A 5.0x ROAS on a 15% margin business is barely breakeven. Margin context is everything.
The interpretation tiers I personally use:
| Platform ROAS | Verdict | What to do |
|---|---|---|
| Below breakeven | Poor — losing money | Pause or rebuild creative/offer immediately |
| Breakeven to 1.3× breakeven | Average — surviving | Optimise before scaling |
| 1.3–2× breakeven | Good — profitable | Scale carefully (20% weekly budget lifts) |
| 2× breakeven or higher | Excellent — fund growth | Aggressive scaling, new creative, retargeting layer |
When to Scale (And When Not To)
Scaling is where most Bangladeshi ecommerce brands sabotage themselves. The rules I follow:
Scale when:
- 7-day ROAS is at or above your target consistently for 14 days
- MER moved in the same direction as platform ROAS
- Creative is still fresh (CTR holding, frequency under 3.0)
- Stock can handle the volume
Do NOT scale when:
- ROAS is above target but MER is flat — Meta is taking credit for organic sales
- CPL is dropping but conversion rate on site is dropping with it — you are buying cheaper but worse traffic
- Creative is fatiguing (frequency > 3.5, CTR dropping week over week)
- You are out of cash flow for inventory
The right way to scale Meta in Bangladesh is horizontal first, vertical second: add new audiences, new creatives, and new objectives before just turning up budget on a winning ad set.
Three ROAS Mistakes I See Constantly
- Reporting ROAS without margin. A 4x ROAS on a 10% margin product is a money-loser. Always pair ROAS with breakeven.
- Trusting platform ROAS in isolation. Without MER, you cannot tell if Meta is creating sales or claiming them.
- Scaling on a 1-day spike. Day-to-day ROAS is noisy. Always make scaling decisions on 7-day rolling windows.
TL;DR
For Bangladeshi ecommerce in 2026:
- Track three ROAS numbers, not one: platform ROAS, MER, and breakeven ROAS.
- Good ROAS = ROAS above your business's breakeven, with margin headroom to grow.
- Scale on 7-day windows, not single-day spikes.
- Use MER as your truth metric, not platform ROAS.
Want a clean diagnostic on whether your current ROAS is healthy and how to scale safely? Book a free 30-minute audit and I will walk through your account with you.
