Landscaping margins were already thin before fuel prices jumped 40.5% year-over-year. Now contractors running equipment all day are watching fertilizer, materials, and insurance all climb at the same time. The fix isn't absorbing the hits -- it's writing contracts that pass the increases through to customers before your margins disappear entirely.

The Quick Answer

Cost pass-through clauses (also called accelerator or price escalation clauses) let you adjust prices when material costs spike above a set threshold. Here's where costs stand right now:

Fuel: Up 40.5% year-over-year. Diesel hitting $5.60/gallon nationally.
Fertilizer: Up 12% in 2026. Equipment costs up 15%. Insurance up 7%.
Average landscaping net margin: 8-12% -- a 10% cost spike wipes out most of your profit.
37% of contractors expect input costs to rise another 10% or more this year.

You can't control what fuel costs. You can control whether your contracts let you adjust for it.

What a Cost Pass-Through Clause Actually Is

A price escalation clause is language in your service contract that allows you to increase your price if material costs rise above a set threshold. It doesn't let you raise prices whenever you want -- it only kicks in when you can document that your actual costs went up.

There are three types, and knowing which fits your contracts matters:

Any-Increase Clause

Contractor gets reimbursed for any documented price increase in materials, no minimum threshold. Best protection for you, but commercial clients often push back. Works well in established relationships where the client trusts your invoices.

Threshold Clause (Most Common)

Only triggers when a cost increase exceeds a set percentage -- typically 5%, 10%, or 15%. Below the threshold you absorb it. Above it, the customer shares the increase.

Example contract language (10% threshold): "If the price of any material specified in this agreement increases by more than 10% between contract execution and the date of purchase, Contractor is entitled to additional compensation equal to the actual increase above the 10% threshold, supported by supplier invoices."

Fuel Surcharge Clause

A standalone clause that triggers automatically when fuel hits a set price per gallon. Easier to communicate to customers because the trigger (pump price) is publicly verifiable.

Example fuel surcharge language: "This agreement's pricing assumes fuel at or below $4.00/gallon. If the average pump price exceeds $4.00/gallon for two consecutive weeks, a fuel surcharge will apply, calculated as [estimated gallons per job] x [actual pump price minus $4.00]."

Pennsylvania contractors raised prices 3-5% this season and added fuel surcharges on larger projects. Customers accepted it because the reasoning was clear and the math was simple.

Writing the Contract Language That Holds Up

Every escalation clause needs four components to be enforceable and avoid disputes:

Baseline price: State the cost of materials at contract signing. Reference the specific date or supplier quote used.
Trigger threshold: Define the percentage increase that activates the clause (5%, 10%, 15%). Pick one -- not a range.
Notice requirement: How you'll tell the customer. Residential clients need 30 days written notice. Commercial clients expect 90 days. Always written, never verbal.
Documentation requirement: You must provide supplier invoices or quotes showing the actual increase. Your word that costs went up isn't enough -- put this in the contract so customers know upfront what evidence triggers the clause.

Quote Validity Periods Protect You on Longer Jobs

Most landscaping contractors now include a quote validity period -- typically 14-30 days. If a customer sits on a quote for 6 weeks and then accepts it, you're not locked into prices that may no longer be accurate.

Add this line to every proposal: "This quote is valid for 14 days from the date above. After 14 days, pricing is subject to review based on current material costs."

Also worth adding: a material substitution clause. If a specified plant or hardscape material becomes unavailable due to supply disruptions (58% of contractors are already seeing 2-3+ week lead times), you can substitute with written approval. Without this clause, supply chain issues can put you in breach even when it's your supplier's fault.

How to Tell Customers Without Losing Them

Most contractors avoid escalation clauses because they're afraid customers will walk. The data says otherwise.

Landscaping customer retention is running at 89% industry-wide in 2026 -- in an environment where 15-20% price increases are common. Customers aren't leaving over price. They're leaving over bad communication.

One contractor raised prices 15-20% across 85% of their client base and lost about 20% of customers. The remaining 80% "fully understood the reasons" -- because they were told in advance with a clear explanation.

Here's how to handle it:

Give 30+ days notice (90 days for commercial). Don't put it on their invoice with no warning.
Send it in writing -- email or letter. Include the new price, effective date, and a one-sentence reason: "Fuel and material costs have increased X% since we last adjusted pricing."
Call your top 5 clients personally. Everyone else gets the email.
Lead with facts, not apologies. You're running a business. The reasons are real. State them directly.
Don't discount to retain difficult clients. A customer who threatens to leave over a 10% cost increase is telling you what they're worth. Let them go and fill that slot with someone who values reliability over price.

What Else Should Be in Your Landscaping Contracts

While you're tightening up your contracts, add these three provisions if you don't already have them:

Scope creep language: Any work beyond the original scope is billed separately at your current rates. Verbal add-ons mid-job are not included in the contract price.
Payment terms: Net 15 or Net 30 for commercial clients. Residential should be due at completion or within 5 days of invoice date.
Annual review clause: Contract pricing is reviewed annually. This sets the expectation upfront that prices will adjust each year -- customers aren't surprised when you raise rates in January.

Bottom Line

With fuel up 40%, fertilizer up 12%, and equipment costs up 15%, landscaping businesses without escalation clauses are absorbing all of that themselves. A simple 10% threshold clause, written clearly and communicated 30+ days in advance, protects your margins without blowing up your customer relationships. Get it into every contract before costs climb another round.

If you want a quoting system that makes re-pricing easy when costs shift, try QuoteSnap for free. It puts instant quotes on your website and lets you update your pricing any time input costs change.

Landscaping Cost Pass-Through Contracts: Protecting Margins with Accelerator Clauses (2026)