What Is SDE? The Plain English Definition
Seller's Discretionary Earnings (SDE) is a measure of the total economic benefit a working owner extracts from their business. It starts with net profit and adds back everything the owner personally benefits from — salary, perks, and one-time costs that won't recur.
SDE was designed for owner-operated businesses where a single owner is also the primary employee. Unlike EBITDA, it assumes the buyer is stepping into the owner's role — so the owner's compensation gets added back as part of the value calculation.
SDE captures the full picture of what the owner takes home: W-2 salary or draws, personal vehicle expenses, personal phone, health insurance, life insurance premiums, retirement contributions, and any non-recurring or discretionary costs that ran through the business.
SDE Formula
Net Income + Owner Compensation + Personal Benefits + Add-Backs = SDE
SDE vs. EBITDA — The Real Difference
These two metrics answer different questions. SDE asks: “What does the current owner earn from this business?” EBITDA asks: “What cash does this business generate independent of who runs it?” For PE buyers looking at HVAC EBITDA multiples, the distinction matters enormously.
| Factor | SDE | EBITDA |
|---|---|---|
| Includes owner's salary | Yes — added back | No — salary stays as expense |
| Used for | Small businesses (<$2M revenue) | Mid-market ($2M+ revenue) |
| Who uses it | Business brokers, Main Street buyers | Private equity, strategic acquirers |
| Multiple range | 2x–4x | 4x–7x (and up) |
| Assumes | Owner is working in the business | Professional management in place |
| Most relevant when | Selling to an individual buyer | Selling to PE or a strategic |
How to Calculate SDE for an HVAC Business
The calculation is straightforward once you know what to add back. Here's the step-by-step process:
- 1
Start with net income from your P&L
Pull the bottom-line net income from your most recent year's profit and loss statement. This is your starting point before any add-backs.
- 2
Add back owner salary
Include everything you paid yourself — W-2 wages, owner draws, officer compensation, or distributions run through payroll. This is typically the single largest add-back.
- 3
Add back owner perks
Vehicle expenses (personal use), personal phone, health insurance premiums, life insurance premiums, and retirement contributions (401k match, SEP-IRA). These run through the business but benefit you personally — they add back into SDE.
- 4
Add back one-time or non-recurring costs
Legal disputes that won't recur, one-time equipment repairs, COVID-related costs, a one-off consultant engagement, or any expense that is genuinely not part of normal recurring operations. These reduce income this year but won't impact future earnings — so they get added back.
- 5
Add back depreciation and amortization
This is the same treatment as EBITDA. D&A is a non-cash expense — adding it back reflects actual cash generation rather than accounting charges.
- 6
The result is your SDE
The sum of steps 1–5 is your Seller's Discretionary Earnings. This is the number a business broker will use to determine your asking price in a Main Street transaction.
Quick Example
HVAC company with $500K net income, $180K owner salary, $40K owner perks, $30K non-recurring legal fees, $25K D&A = $775K SDE.
When PE Buyers Switch from SDE to EBITDA
This is the most important section for HVAC owners considering a PE sale: PE buyers almost never use SDE. The moment a business reaches roughly $1M–$2M in revenue — or is being sold to a private equity firm — buyers switch to EBITDA because they plan to install professional management and the owner's compensation becomes irrelevant to their model.
Understanding this transition is critical. A strong SDE number can look impressive but mask a weak EBITDA — which is exactly what PE buyers scrutinize in a quality of earnings review.
The PE Rule of Thumb
Once your HVAC business generates $2M+ in revenue and you're targeting PE buyers, EBITDA — not SDE — is the number that drives your valuation.
PE buyers assume they'll replace the owner with a GM — so they remove owner comp from the equation entirely. Your $180K salary doesn't add value to their model; it's a cost they plan to replicate with a hired general manager.
They care about EBITDA because that's the cash flow that services acquisition debt. PE typically uses leverage to acquire — they need to know what cash the business generates to service that debt, not what the current owner pays himself.
Your SDE may look great but if your EBITDA is weak (high owner comp relative to revenue), it signals key-person risk. A $775K SDE with only $595K EBITDA means $180K of “earnings” disappear the moment the owner leaves.
Normalizing compensation to market-rate manager salary ($80K–$120K for a GM) is the standard PE adjustment. If you paid yourself $400K in a $3M revenue business, the buyer will model $100K–$120K for a replacement GM — adding $280K–$300K back to EBITDA, which can meaningfully change the valuation.
Common SDE Add-Back Mistakes HVAC Owners Make
Most mistakes fall into one of three buckets — and each one either costs you money or creates a credibility problem with buyers.
- 1
Over-adding personal expenses
Claiming personal travel, home office, or spouse payroll that aren't genuinely business costs. PE advisors will reverse these in the quality of earnings review — and it creates a credibility problem for every other add-back you've claimed.
- 2
Missing legitimate add-backs
Forgetting one-time costs like a lawsuit settlement, a building repair that won't recur, or a large equipment failure that hit this year's P&L. Every legitimate add-back left on the table directly reduces your SDE — and your asking price.
- 3
Not normalizing owner compensation
If you paid yourself $400K in a $1.5M revenue business, an advisor will normalize this to $100K market-rate — dramatically changing the number a buyer uses. Understanding this normalization in advance lets you model your EBITDA correctly and avoid surprises at the table.
What This Means for Your HVAC Valuation
The framework is straightforward once you know which metric applies to your situation:
Under $2M revenue? Your SDE multiple (2x–4x) sets a floor. This is what business brokers and individual buyers will use to price your deal.
Over $2M and targeting PE? EBITDA multiple (4x–7x+) is what matters. Build your financials to present a strong EBITDA — not a strong SDE.
The gap between a strong SDE and a strong EBITDA is where most pre-sale prep value lives. The larger the spread between your SDE and EBITDA, the more owner-dependent your business is — which is exactly the risk PE prices in.
Reducing owner-centricity and building systems that a GM could run is the single biggest lever for improving your PE readiness factors and moving your EBITDA multiple toward the top of its range.
Use the OffRamp calculator to see how your EBITDA-based valuation stacks up — and which PE readiness factors move your multiple.
Get Your Full EBITDA Valuation
Ready to understand your HVAC company's EBITDA-based valuation — the number PE buyers actually use? The OffRamp Full Valuation Report gives you a complete analysis with your EBITDA multiple range, PE Readiness Score, and a step-by-step plan to maximize your exit price.
Instant report. No broker required.
Get the Full Valuation ReportFrequently Asked Questions
What is a good SDE for an HVAC business?
A healthy SDE for a small-to-mid HVAC company is $300K–$800K, representing the owner's full economic benefit. SDE above $1M typically signals a business that has transitioned beyond the SDE framework into EBITDA territory.
How does SDE affect the sale price of my HVAC company?
SDE × your negotiated multiple = estimated sale price for a Main Street transaction. For PE deals, EBITDA replaces SDE as the base. A business with $500K SDE and a 3x multiple = $1.5M; the same business with $400K EBITDA and a 5x PE multiple = $2M — illustrating why transitioning from SDE to EBITDA framing often yields a higher sale price.
Should I use SDE or EBITDA to value my HVAC business?
Depends on who's buying. Individual buyers and business brokers typically work in SDE. PE firms and strategic acquirers work in EBITDA. If your goal is a PE sale, focus on growing and presenting your EBITDA — not your SDE.
OffRamp is a free valuation tool for HVAC business owners. We don't sell your information, represent buyers, or work on commission. The calculator and reports are educational tools — always consult a licensed M&A advisor before entering a sale process.