Pricing
Copper pipe prices: what moved them, and how to keep your quotes safe
Copper got a lot more expensive between 2025 and 2026, and a 50 percent tariff on imported copper pipe and fittings took effect in August 2025. Here are the dated numbers, what the tariff covers, how a price swing eats into a quote, and the four things a plumbing shop can do about it.
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If your supply house price on a stick of Type L looks nothing like it did last year, you're not imagining it. Copper rose through 2025 and kept rising in 2026, and a tariff on imported copper pipe and fittings took effect in between. For a plumbing shop, the risk isn't the higher price. It's quoting at last month's price and buying at next month's.
This guide gives the dated numbers from official sources, explains what the tariff covers, shows how a price move hits one quote, and lists what to change in your quotes and your price book. It doesn't give "today's price": that comes from your supplier, on the day you buy.
What copper did in 2025 and 2026
Three official series, each with its own date:
The metal price
The World Bank's commodity price data (the "Pink Sheet", updated October 2, 2026) tracks the London Metal Exchange copper price in dollars per metric ton. The per-pound figures are our conversion.
| Period | $ per metric ton | About $ per pound |
|---|---|---|
| 2024 average | 9,142 | 4.15 |
| 2025 average | 9,947 | 4.51 |
| September 2025 | 9,984 | 4.53 |
| January 2026 | 13,012 | 5.90 |
| September 2026 | 14,474 | 6.57 |
That's a 45 percent rise from September 2025 to September 2026.
The price of US mill products
Plumbers buy tube, not metal. The Bureau of Labor Statistics producer price index for copper and brass mill shapes stood at 813.3 in August 2026 (preliminary), up 20.9 percent from 672.7 in August 2025. It's an index, not a price, but it shows that what US mills charge moved too.
Why
The US Geological Survey's Mineral Commodity Summaries 2026 (February 2026) projected that the COMEX copper price would average a record $4.80 per pound in 2025, 14 percent more than the $4.22 of 2024, and said analysts attributed the rise mainly to uncertainty over tariffs on US copper imports.
The Section 232 copper tariff
On July 30, 2025, the President signed a proclamation under Section 232 of the Trade Expansion Act putting a 50 percent tariff on imports of semi-finished copper products and intensive copper derivative products, effective 12:01 a.m. on August 1, 2025. The White House fact sheet names copper pipes and tubes, wires, rods and sheets as semi-finished products, and pipe fittings, cables, connectors and electrical components as derivatives. Copper ores, concentrates, cathodes, anodes and scrap were left out. At first, the duty applied only to the copper content of each product.
The rules have changed since:
- April 2, 2026. A new proclamation made the duty apply to the full customs value of the product, regardless of metal content, from April 6, 2026. Most copper articles stayed at 50 percent; some listed articles moved to 25 percent; and derivatives whose copper was entirely smelted and cast in the US got a 10 percent rate.
- June 1, 2026. Another proclamation changed the product lists again, effective June 8, 2026.
- Refined copper. The 2025 proclamation asked Commerce for an update by June 30, 2026, so the President could decide whether to phase in a duty on refined copper. Commerce had recommended 15 percent from 2027 and 30 percent from 2028. We didn't find a decision on it in the notices we read.
Which rate applies to a given fitting or coil depends on its tariff code and where its copper came from. Ask your supplier whether a price includes a tariff surcharge, and check the White House and CBP notices before you assume a rate. This changes; read the newest notice.
Type K, L, M and DWV in one minute
From Cerro's technical data for copper tube (ASTM B88 for water tube, ASTM B306 for drainage tube):
| Type | Wall | Color code | Typical use (Cerro) |
|---|---|---|---|
| K | Heavy | Green | Underground residential, commercial and industrial; water service |
| L | Medium | Blue | Residential and commercial water distribution, heating |
| M | Light | Red | Above-ground residential and light commercial |
| DWV | Drainage | Yellow | Drain, waste and vent; non-pressure |
More wall means more copper per foot, so a price move hits Type K harder than Type M in dollars. Your local code and the utility decide which types you can use where.
How a price move hits one quote
Here's a repipe quote with example numbers, not real prices:
| Line | At quote time | If copper is 15% higher when you buy |
|---|---|---|
| Copper tube and fittings, your cost | $2,000 | $2,300 |
| Materials on the quote (30% markup) | $2,600 | $2,600 |
| Gross profit on materials | $600 | $300 |
Extra cost = copper material cost × price increase
A 15 percent move on $2,000 of copper costs you $300 and cuts the profit on those materials in half. The customer's price didn't change. The bigger the copper share of the job (repipes, water services, boiler work), the more of your margin rides on the date you buy.
Quote validity and escalation clauses
Three habits protect you:
- Short validity on copper-heavy jobs. Print an expiry date on every quote. When prices are moving, make it short for copper work, and re-price anything that's expired before you accept it.
- Buy when they sign. If the customer signs today, order the copper today. A signed quote with materials on the shelf is a locked price.
- A material escalation clause for jobs that start weeks out. Keep it plain and specific, and have your attorney check it for your state. For example:
Example wording: "Prices for copper pipe and fittings are based on supplier pricing on the date of this quote. If our cost for these materials rises by more than 5% before they are purchased, we'll show you the supplier invoice and adjust the materials line by the difference. You may cancel before work starts if you don't accept the adjustment."
A clause the customer understands at signing is a lot easier than a surprise change order halfway through.
PEX where code allows
The USGS lists plastics among the substitutes for copper in water pipe. Codes allow PEX in many places: Michigan's amended plumbing code tables, for example, list PEX next to copper tube types K, L and M for both water service and water distribution. Local amendments, the utility and the manufacturer's instructions can still limit where it goes, so check before you offer it.
Where it's allowed, give the customer the choice on the proposal: a copper option and a PEX option, each priced from your book, with what's different about each. See the plumbing proposal template for how to lay out options.
Update your price book
Price swings are a price book problem. Every quote that pulls an old copper cost is a quote that loses money.
- Check copper costs on a schedule, monthly or when your supplier sends a price notice, and update the material lines.
- Re-check your flat-rate tasks that use a lot of copper: water services, repipes, manifolds.
- Date your material costs so you know which ones are stale.
- Tell repeat customers before their next job, not on the invoice.
Our guides on how to build a plumbing price book and the price increase letter cover both steps.
Plumbo, now on the App Store and Google Play, builds each quote from your own price book. Change the copper price once and every new quote uses it. Try the 60-second demo →
Sources
- The White House, Adjusting Imports of Copper into the United States (proclamation, July 30, 2025), checked October 9, 2026.
- The White House, Fact Sheet on copper imports (July 2025: covered products), checked October 9, 2026.
- The White House, Strengthening Actions Taken to Adjust Imports of Aluminum, Steel, and Copper (proclamation, April 2, 2026), checked October 9, 2026.
- The White House, Further Adjusting the Tariff Regimes for Imports of Aluminum, Steel, and Copper (proclamation, June 1, 2026), checked October 9, 2026.
- U.S. Customs and Border Protection, CSMS # 65794272, Section 232 Import Duties on Copper (July 31, 2025), checked October 9, 2026.
- World Bank, Commodity Price Data (The Pink Sheet), monthly data updated October 2, 2026 (copper, LME), checked October 9, 2026.
- U.S. Bureau of Labor Statistics, PPI Commodity data: Copper and brass mill shapes (WPU102502), checked October 9, 2026.
- U.S. Geological Survey, Mineral Commodity Summaries 2026: Copper (PDF, February 2026), checked October 9, 2026.
- Cerro Flow Products, Copper Tube for Construction Applications (PDF technical data: types, uses, color codes), checked October 9, 2026.
- Michigan Administrative Code, R. 408.30729, Water service pipe and R. 408.30727, Water distribution pipe (via Cornell LII), checked October 9, 2026.