Understanding Your Payment Rights Under Pennsylvania’s CASPA
Key Takeaways: Under Pennsylvania’s Contractor and Subcontractor Payment Act (CASPA), late payment penalties include ordinary interest, 1% per month on wrongfully withheld amounts, plus attorney’s fees and litigation expenses. The law applies to most private commercial construction contracts and entitles contractors and subcontractors to prompt payment. Owners must provide written notice within 14 days of receiving an invoice to withhold for a deficiency, or they waive that basis. A party generally avoids penalties only if the withheld amount bears a reasonable relation to a good faith claim. Public works projects follow separate prompt payment rules with 45-day timelines and statutory interest. CASPA penalty interest cannot be waived by contract, making strong documentation and timely action essential.
The CASPA penalty for late payments in Pennsylvania can include interest, a 1% per month penalty for wrongfully withheld amounts, plus attorney’s fees and litigation expenses. The Contractor and Subcontractor Payment Act, found at 73 P.S. § 501 et seq., gives contractors and subcontractors powerful tools when a paying party delays payment.
Pennsylvania’s law applies to most private commercial construction contracts (public works projects follow separate prompt payment law, and certain smaller residential projects are excluded) and requires prompt payment per contract provisions. It also imposes penalties for wrongful withholding. For commercial construction businesses managing tight cash flow, understanding these penalties can mean the difference between absorbing a loss and recovering what you are owed.
If you are facing a stalled invoice on a commercial project, Davis Bucco & Makara is ready to help. Reach our team online through the firm’s main website, call our office at 610-238-0880, or use our secure client contact form to discuss your situation.
Why the Pennsylvania Construction Payment Law Exists
CASPA was created to address longstanding payment abuses in the building industry. Pennsylvania courts have repeatedly recognized its remedial purpose when interpreting penalty application.
The Pennsylvania Superior Court, quoting El-Gharbaoui v. Ajayi, 260 A.3d 944 (Pa. Super. 2021), described CASPA as a comprehensive statute enacted in 1994 to cure abuses within the building industry involving payments from owners to contractors, contractors to subcontractors, and subcontractors to other subcontractors.
The law sets concrete rules and deadlines so money keeps moving down the contracting chain. It discourages unreasonable withholding by attaching financial consequences. Under circumstances prescribed in the statute, interest, penalties, attorney’s fees, and litigation expenses may be imposed on any party who fails to make payment in compliance.
💡 Pro Tip: Keep contemporaneous records of every invoice submission date. CASPA deadlines often run from "the date the invoice is received," so timestamped delivery records can become your most valuable evidence.
How the CASPA Late Payment Penalty Pennsylvania Calculates
The headline penalty under CASPA is a 1% per month charge on wrongfully withheld amounts. This is separate from ordinary contract interest and discourages unjustified withholding.
The arbitrator, Board of Claims, or court may award a penalty equal to 1% per month of the amount wrongfully withheld. A party is generally insulated from this penalty only where the amount withheld bears a reasonable relation to a claim held in good faith and the statute’s notice requirements are met.
Timing obligations begin with the contractor’s final invoice.
CASPA provides for a default process where a contractor may submit a final invoice upon completion, per 73 P.S. § 505(a), (b). Once that invoice arrives, the clock starts on the owner’s duty to either pay or object. Failing to act within the statutory window can forfeit the right to contest the amount.
Owners who want to withhold for a deficiency must act quickly and in writing.
Under 73 P.S. § 506(b)(1)-(2), the owner must notify the contractor of the deficiency with a written explanation of its good faith reason within 14 calendar days of receiving the invoice.
Failure to comply shall constitute a waiver of the basis to withhold payment. In practice, a silent owner may owe the full invoice even if a legitimate complaint existed.
A Recent Case Shows the Stakes for Commercial Construction Payment Disputes Philadelphia Businesses Face
A 2024 Pennsylvania Superior Court decision illustrates how these disputes reach litigation. Burns Electrical Services v. Patel involved an electrical contractor pursuing an unpaid balance under CASPA. The contractor sued for a $12,465.27 balance plus CASPA penalties after the property owner paid only $5,000 of a $17,465.27 invoice, and the court reversed summary judgment due to genuine issues of material fact. You can review the full Superior Court opinion in Burns Electrical for the court’s reasoning.
The takeaway is that fact-specific disputes are common and rarely resolve on paper.
Whether withholding was made in good faith often depends on documentation, notices, and the parties’ conduct.
💡 Pro Tip: If you are a subcontractor, do not assume contract language alone protects you. Pennsylvania subcontractor payment rights under CASPA may survive even when a contract tries to limit them.
Public Works Projects Follow Separate Prompt Payment Timelines
Pennsylvania’s public works prompt pay rules operate under a different framework than private commercial contracts. Government-funded construction carries its own deadlines and interest provisions. For public works contracts without a specified payment term, payment must be made within 45 calendar days of receiving the application for payment.
Interest accrues on late public payments at a defined statutory rate.
When progress payments are late, the contracting body must pay the contractor, in addition to the amount due, interest computed at the rate determined by the Secretary of Revenue for overdue taxes. No interest penalty is required if payment is made on or before the 15th calendar day after the required payment date.
Contractors on public projects must promptly pass payments down to subcontractors.
A contractor shall pay to the subcontractor the full or proportional amount received for each subcontractor’s work and material 14 days after receipt of a progress payment. The official text of these provisions is published by the Pennsylvania General Assembly statutes portal, which hosts Title 62 and other governing titles.
| Scenario | Key Deadline | Potential Penalty |
|---|---|---|
| Private commercial withholding for a deficiency | Written notice within 14 days of invoice | Waiver of basis to withhold |
| Wrongful withholding under CASPA | Ongoing until paid | 1% per month plus fees |
| Public works payment, no term specified | 45 days from application | Statutory interest |
| Public progress payment to subcontractor | 14 days after receipt | Interest exposure |
What a Construction Attorney Philadelphia Clients Trust Can Do
A knowledgeable construction attorney can evaluate whether withholding crossed the line into wrongful or bad faith conduct. These cases turn on notice, timing, and documentation. An attorney can assess your claim, calculate potential penalty interest, and pursue attorney’s fees where the statute allows. Notably, CASPA’s attorney’s fees provision is awarded to the substantially prevailing party without requiring proof of bad faith. Our team handles these matters through the firm’s commercial construction payment disputes Philadelphia practice.
Coverage questions sometimes reach beyond the categories the statute names explicitly.
CASPA’s penalty interest protections may extend to design professionals even though the statute does not expressly cover them, as one Pennsylvania case permitted recovery of interest and attorney’s fees despite that gap. The Third Circuit, in C.J. Hughes v. EQM Gathering, held that penalty interest under CASPA could not be waived by contract, whether before or after the 2018 amendment that expressly prohibited waivers of any provision not authorized under the act.
When deciding whether to pursue a claim, consider:
- Whether you submitted a complete final invoice and can prove the delivery date
- Whether the paying party provided timely written notice of any deficiency
- Whether the withholding appears arbitrary rather than a genuine dispute
- Whether your project is private commercial work or a public works contract
💡 Pro Tip: Venue and filing strategy can matter. A Conshohocken construction lawyer or Philadelphia-based firm can advise on where a claim is best positioned based on project location and contract terms.
Practical Steps Before a Payment Dispute Escalates
Strong documentation habits often determine who prevails in a CASPA dispute. Courts consider the parties’ conduct, timing of notices, and completeness of work. Because these issues are fact-sensitive, building a clear record early is far more effective than reconstructing one later. To understand the broader landscape, review our guide explaining what drives a construction payment dispute.
Remember that CASPA penalties are not automatic and remain subject to exceptions. A good faith dispute over defective work may justify withholding when proper, timely written notice is given and the withheld amount bears a reasonable relation to that claim. The statute rewards parties who follow its procedures.
Frequently Asked Questions
1. How much is the CASPA penalty for withholding payment in bad faith?
The penalty can reach 1% per month of the amount wrongfully withheld.
A court, arbitrator, or Board of Claims may award a penalty equal to 1% per month of the amount wrongfully withheld, plus interest, attorney’s fees, and litigation expenses.
2. What happens if an owner does not object to my invoice in time?
Silence can cost an owner the right to withhold.
Under 73 P.S. § 506(b)(1)-(2), failure to provide a written good faith explanation within 14 calendar days shall constitute a waiver of the basis to withhold payment.
3. Can a contract waive CASPA penalty interest?
Generally, no.
The Third Circuit in C.J. Hughes v. EQM Gathering held that penalty interest under Pennsylvania’s prompt payment law could not be waived by contract. The 2018 amendment expressly prohibited waiver of any provision not authorized under the act.
4. Are deadlines different for public works projects?
Yes, public works projects follow separate timelines.
Where no payment term is specified, payment must be made within 45 calendar days of receiving the application for payment. A 15-day grace period may apply before interest penalties accrue.
5. Do design professionals have CASPA rights?
Possibly, depending on the facts.
A Pennsylvania case permitted recovery of interest and attorney’s fees for a design professional despite the statute not expressly covering that category. Analysis of your specific role is advisable.
Protecting Your Project’s Cash Flow
Late payment on a commercial construction project does not have to become a permanent loss. CASPA and Pennsylvania’s public works provisions give contractors, subcontractors, and suppliers real leverage through interest, penalties, and fee recovery when withholding is unjustified. The rules are detailed and deadlines strict, so understanding their application to your contract is essential. Because each dispute turns on its own facts, careful documentation and timely action remain your strongest assets.
If a stalled invoice is threatening your bottom line, the team at Davis Bucco & Makara is prepared to evaluate your CASPA claim. Call our office at 610-238-0880 or reach out through our confidential consultation request to learn how Pennsylvania construction payment law may protect your rights.