Revenue Verification Guide for Laundromat Buyers
How to verify every number before you buy — using water bills, bank deposits, and card data
The seller says the laundromat makes $15,000/month. But how do you know it's true?
Revenue verification is the most critical step in laundromat due diligence. Industry experts estimate 15-30% of listings inflate revenue claims. Unlike most businesses, laundromats have a secret weapon: water bills. Here's how to use them—and other methods—to verify what a business actually earns.
⚠️ The Golden Rule
If you can't verify it, don't pay for it. Reduce your offer to reflect only the revenue you can confirm.
Method 1: The Water Usage Method
Every wash uses water. By working backward from water consumption, you can estimate revenue independently of what the seller claims.
The Formula
Step-by-Step
- Get 24 months of water bills (request actual bills, not summaries)
- Calculate average monthly gallons used
- Estimate gallons per wash cycle:
- Top-load washers: 35-50 gallons
- Front-load washers: 15-25 gallons
- Use 35 gallons as a conservative average for mixed fleets
- Multiply by average vend price
Example Calculation
- Water usage: 175,000 gallons/month
- Gallons per wash: 35 (conservative estimate)
- Washes per month: 175,000 ÷ 35 = 5,000 washes
- Average washer price: $4.00
- Estimated washer revenue: $20,000/month
Add dryer revenue (typically 25-35% of washer revenue):
- Estimated dryer revenue: $5,000-$7,000/month
- Total estimated revenue: $25,000-$27,000/month
Note on high-efficiency machines: If machines are 2018+, use 20-25 gallons per wash instead of 35.
🚩 Red Flags
- Seller claims $40,000/month but water shows $25,000 capacity
- Water bills are "unavailable" or only summaries provided
- Dramatic swings in water usage with no explanation
Method 2: The Bank Deposit Method
Cross-reference reported revenue with actual bank deposits.
How to Do It
- Get 24 months of bank statements (all accounts used for the business)
- Total all deposits each month
- Subtract non-revenue items:
- Loan proceeds
- Owner contributions
- Refunds or chargebacks
- Transfers between accounts
- Compare to reported revenue
What to Look For
- Deposits should match or slightly exceed reported revenue
- Consistent deposit patterns (laundromats are predictable)
- No unexplained large deposits before listing
Method 3: The Machine Turn Method
Calculate theoretical maximum revenue based on equipment.
The Formula
Industry Benchmarks
| Machine Type | Turns/Day (Average) | Turns/Day (Busy) |
|---|---|---|
| Top-load washer | 3-5 | 6-8 |
| Front-load washer | 4-6 | 7-10 |
| Stack dryer | 5-7 | 8-12 |
Example
- 20 washers averaging 5 turns/day at $4.00 = $12,000/month
- 20 dryers averaging 6 turns/day at $3.50 = $12,600/month
- Total: ~$24,600/month
If seller claims $35,000/month, the math doesn't work unless machines are running 8+ turns daily.
Method 4: Card Payment Verification
If the laundromat has card/app payments, this is your most reliable data source.
What to Request
- 24 months of payment processor statements
- App provider reports (Speed Queen, Dexter, CSC Go, etc.)
- Credit card merchant statements
Why It Matters
- Card transactions are timestamped and verified
- Shows actual usage patterns by time of day
- Reveals seasonal trends
- Can't be easily manipulated
Cash vs. Card Mix
- Many laundromats still run 60-70% cash (especially unattended stores)
- Newer card-heavy stores may be 50-60% card
- High cash percentage (80%+) = harder to verify
- If card revenue is $10,000 and seller claims 50/50 split, total should be ~$20,000
Wash & Fold Revenue (Often Overlooked)
If the laundromat offers drop-off wash & fold (WDF) service, this revenue doesn't correlate with water usage and needs separate verification.
How to Verify WDF
- Request POS system reports showing WDF transactions
- Count bags processed per day (multiply by avg price ~$1.50/lb)
- Cross-reference supply orders (detergent, bags) as a proxy
- WDF can be 20-40% of total revenue in service-heavy stores
Triangulation: Putting It All Together
Never rely on one method. Compare all sources:
| Method | Estimated Revenue |
|---|---|
| Water calculation | $28,000 |
| Bank deposits | $27,500 |
| Machine turns | $26,000 |
| Card data (if 50%) | $26,000 ($13k × 2) |
✅ Convergence = Confidence
If all methods point to ~$27,000, that's likely accurate.
⚠️ Divergence = Investigate
10-20% divergence is common. Check for WDF revenue, vending income, seasonal variation, or unreported cash.
🚩 Major Divergence = Red Flag
If seller claims $35,000 but every method shows $25,000, walk away or renegotiate.
Seasonal Note: Laundromats have 10-20% seasonal swings. Always compare same months year-over-year, not consecutive months.
Questions to Ask the Seller
- "Can I get the actual utility bills, not summaries?"
- "Which bank accounts are used for business deposits?"
- "What's your card vs. cash split?"
- "Have there been any equipment changes in the last 2 years that affected revenue?"
- "Can I see your payment processor login to verify transactions?"
Verification Summary
| Method | Best For | Limitation |
|---|---|---|
| Water test | Independent verification | Requires accurate gallons/wash estimate |
| Bank deposits | Actual cash received | Must exclude non-revenue items |
| Machine turns | Sanity check on claims | Theoretical, not actual |
| Card data | Precise verification | Only covers card transactions |
Ready to Run the Numbers?
Use our tools to analyze your deal with verified revenue:
📊 Financial Analysis
- • Deal Analyzer — Run scenarios with verified numbers
- • ROI Calculator — Calculate returns based on true NOI
- • Valuation Models — See how verified revenue affects price