In a perfect construction project, money flows from the owner down to the lower tiers of contractors, subcontractors and suppliers, and is eventually received by you for the goods or services you provide. Unfortunately, as we all know, there is no such thing as a perfect construction project. In some instances, money flows in the opposite direction from you back to the contractor you are working for. This is known as a construction back charge (sometimes spelled “backcharge”) and occurs when you owe money back to the contractor you are working for.
How Does a construction Back charge arise?
Construction back charges arise when you become indebted to the person you contracted with. Basically, the invoice your contractor sends you for the amount you owe them is the back charge. How back charges arise, whether you can dispute the back charge, how long you have to pay the construction back charge and similar questions all are determined by the terms of your agreement with your contractor.
What does the law say?
Unlike mechanic liens, there are no laws which allow back charges or govern how back charges work. A construction back charge is a creation of the contract you signed with the contractor. Back charge terms vary greatly from contract to contract but they generally cover the following issues: (i) What events will result in a back charge; (ii) How the back charge costs are calculated; (iii) When payment of the back charge is due; (iv) Whether non-payment of a back charge is a breach of contract or an event of default (which triggers remedies in addition to the back charge); and (v) whether and how you may dispute a back charge.
you have the ability to negotiate a construction back charge
Since back charges are controlled by your contract terms, you have the ability to negotiate the limits and rules controlling back charges when you negotiate the terms of your agreement. You should try to get terms which prevent unfair back charges, payment terms, and cost calculations. For example, if you are only partially responsible for damage to property, the construction back charge should be proportionate to your liability. Also, back charges should be calculated to capture the actual cost your contractor incurred and not include unreasonable mark ups for overhead, field supervision, or profit. You should also avoid terms which allow double billing for the same event. This often happens when you are charged liquidated damages for a breach of contract and also served a back charge for the costs to remedy the breach. Liquidated damages are intended to be a pre-calculation of damages which replaces calculation of actual costs at the time of the event.
Negotiating terms can be intimidating but, at a minimum, you should try to negotiate terms which require the contractor give you written notice of its intent to back charge you and an opportunity to cure the cause of the back charge. It’s only after you received the notice and fail to fix the issue within a reasonable amount of time that your contractor can move forward with back charges. You can see how this simple provision can prevent a lot of back charges when you consider the common causes of back charges.
The most common causes of back charges
The most common causes of back charges are defective work, damages to the property caused by performance of your work, costs for use of contractor’s equipment, and site clean-up costs. You likely have the ability to fix all of these issues if you know about them and are given the chance to fix them, which prevents the contractor from incurring any costs to charge back to you. Also, you probably can fix all of these issues cheaper than if your contractor gets a third party to fix the problem. Back charges are a common practice in the construction industry, so you need to know how they work to protect yourself. However, if you have any doubt or questions on the issue, it is always best to consult with a construction law expert.
Frequently Asked Questions
What is a back charge in construction?
A construction back charge is a deduction taken by an upstream party (owner, general contractor, or higher-tier subcontractor) from amounts otherwise owed to a downstream contractor, subcontractor, or supplier — typically claimed as compensation for deficient work, delays, defective materials, or other costs the upstream party attributes to the downstream party. Back charges appear as line-item deductions on payment applications or as withholdings from progress payments and retention. Legitimate back charges require documentation and proportionality; wrongful back charges are a recovery target for unpaid claimants.
What documentation must a legitimate back charge include?
A defensible back charge typically requires: (1) written notice to the downstream party identifying the alleged deficiency, before the back charge is applied; (2) opportunity for the downstream party to cure or respond; (3) documentation of the actual costs incurred (invoices, time records, replacement contracts); (4) proportional relationship between the deduction and the documented loss; (5) reference to the contract provision authorizing the back charge. Back charges that lack any of these elements are vulnerable to challenge in litigation or mechanics lien foreclosure.
Can I file a mechanics lien for a wrongful back charge?
Yes — wrongful back charges are recoverable through mechanics lien filings in most states because the lien amount equals the value of labor and materials provided, NOT the net invoice after deductions. If the upstream party wrongfully back-charged $20,000 from a $100,000 payable, the claimant can lien for the full $100,000 (or the unpaid balance). The wrongful back charge becomes a litigation defense by the upstream party — but the lien preserves the security. Don't let a wrongful back charge silently erode lien rights — file the full amount and litigate the deduction separately.
How do I dispute a back charge?
Step 1: Respond in writing within the contract's notice period (typically 7-30 days) rejecting the back charge and demanding documentation. Step 2: Request copies of all documentation supporting the alleged deficiency, including invoices, time records, and inspection reports. Step 3: If the documentation is missing or inadequate, demand reversal of the back charge before signing any waiver or accepting payment with the deduction. Step 4: If the upstream party refuses, file a mechanics lien for the full amount (before back charge) and pursue recovery through foreclosure and prompt payment penalties.
What are the most common types of construction back charges?
Common back charge categories include: (1) Deficient work or rework — claims that the downstream party's work failed inspection or required rework by another contractor; (2) Delay damages — liquidated damages or actual costs caused by the downstream party's schedule failures; (3) Defective materials — claims that materials failed specifications and required replacement; (4) Cleanup or trash removal — costs the upstream party claims it incurred to clean up the downstream party's debris; (5) Insurance and bond costs — claimed reimbursement for coverage the upstream party purchased. Each requires its own documentation standard.
Can the back charge exceed the amount the GC paid for the corrective work?
No — back charges are limited to the actual documented cost of the corrective work. A GC cannot back-charge $50,000 for rework that cost only $20,000. Excessive back charges are challengeable on multiple grounds: breach of contract (if the contract requires actual cost documentation), unjust enrichment (if the GC profited from the back charge), and bad-faith withholding (under state prompt payment statutes). Most state prompt payment statutes prohibit retention of disputed amounts beyond 150% of the disputed cost — excessive back charges trigger penalty interest and fee-shifting.
How does National Lien & Bond help fight wrongful back charges?
National Lien & Bond pursues wrongful back charge recovery for unpaid contractors, subcontractors, and suppliers as part of a complete construction-payment recovery strategy. For Illinois-based engagements, Hal Emalfarb's firm at Emalfarb Swan and Bain handles strategic coordination. For 50-state coverage, NLB connects claimants with vetted construction-payment attorneys who challenge back charges through mechanics liens, prompt payment statute enforcement, and direct contract claims. The combination of lien leverage + prompt payment penalties + fee-shifting frequently produces back-charge reversal at settlement. Contact NLB for a free initial consultation.