What Material Cost Overruns Actually Cost Per Job
A practical, data-backed guide to controlling costs and automating expense workflows.
Material cost overruns can significantly impact the bottom line of small construction businesses, with price increases affecting profitability and making it challenging to manage construction expenses. To mitigate these overruns, it's essential to stay up-to-date on current price trends, including the 11.2% annual increase in nonresidential construction input prices as of September 2026. Effective construction expense management for under $10/user (2026) can help owners and office managers make informed decisions and avoid costly mistakes.
Mitigating Material Cost Overruns: Strategies and Best Practices
When material cost overruns occur, it's essential to have a plan in place to mitigate their impact. Here are some strategies and best practices to help you manage these overruns:
- Update your bids regularly to account for price volatility. This will help you stay ahead of increasing costs and avoid costly surprises.
- Monitor your suppliers closely to identify potential material price increases. Negotiate with them to secure the best possible prices.
- Use real-time cost monitoring to track material costs and identify areas where you can optimize your spending.
- Consider alternative materials that may be less expensive or more readily available.
- Communicate with your clients and work with them to find solutions to material cost overruns.
Remember, material cost overruns can be unpredictable, but with the right strategies and best practices, you can minimize their impact and stay profitable.
As nonresidential construction input prices continue to rise, with a 2.3% increase in September 2026 and an 11.2% annual increase, it's more important than ever to stay on top of material costs and adjust your strategies accordingly.
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The Role of Tariffs, Labor Shortages, and Supply Chain Disruptions
Chronic labor shortages are affecting the construction industry, leading to increased wages and productivity losses. According to reports, labor shortages are causing a 2.3% monthly increase in nonresidential construction input prices, bringing the annual increase to 11.2% as of September 2026.
- Labor shortages can lead to increased project costs due to higher wages and lost productivity.
- Tariffs imposed on imported materials can also drive up costs.
- Supply chain disruptions can cause delays and increase costs due to the need for alternative materials or transportation methods.
To mitigate these risks, construction businesses should:
- Monitor labor market trends and adjust staffing levels accordingly.
- Consider using local or domestic materials to minimize the impact of tariffs.
- Develop contingency plans for supply chain disruptions, including identifying alternative materials and transportation methods.
By understanding and addressing these factors, construction businesses can better manage the financial risks associated with material cost overruns and stay competitive in the market.
Understanding Material Cost Overruns and Their Financial Impact
Material cost overruns can have a significant financial impact on small construction businesses. The current price trends in the construction industry are cause for concern. Nonresidential construction input prices rose 2.3% in September 2026, bringing their annual increase to 11.2%. This means that construction businesses need to be prepared for higher material costs.
One area to consider is per diem rates for employees working on construction sites. The IRS per diem rate for high-cost localities is $329 per day, effective October 1, 2026, to September 30, 2027. This rate includes lodging, meals, and incidental expenses. It's essential to keep track of these rates to ensure accurate accounting and compliance with tax regulations.
Some localities have also been added to the list of high-cost areas, including Tucson, Arizona; San Mateo/Foster City/Belmont, California; Albuquerque, New Mexico; and Cody, Wyoming. These changes may impact the per diem rates for employees working in these areas.
Tariffs are another significant factor in construction material cost increases, particularly for steel and aluminum. It's essential for construction businesses to stay informed about tariff changes and adjust their bids and budgets accordingly.

Current Price Trends and Material Price Fluctuations
Current price trends for construction materials are influenced by various factors, including supply chain disruptions and ongoing inflation. The Producer Price Index (PPI) for Construction Materials was 375.90800 as of August 2026, which reflects the overall price trend in the industry. This indicates a steady upward trend in material prices.
- Monitor the PPI for Construction Materials regularly to stay informed about price trends.
- Keep track of nonresidential construction input prices to anticipate future price fluctuations.
- Be aware of the annual increase in material prices to adjust your budget accordingly.
Supply chain issues continue to cause delays and cost overruns. To mitigate this risk, it's essential to:
- Regularly check with suppliers for updates on material availability and lead times.
- Consider alternative suppliers to minimize the impact of supply chain disruptions.
- Adjust your project timelines and budgets to account for potential delays.
Keep in mind that material prices can fluctuate rapidly, so it's crucial to stay informed and adapt your strategies accordingly.
Managing Per Diem and Mileage Rates for Construction Businesses
The IRS has implemented various per diem and mileage rate changes to affect construction businesses. The rates vary by locality and year. The IRS mileage rate for business use is 72.5 cents per mile from January 1, 2026, and 76 cents per mile from July 1, 2026.
To manage these rates, construction businesses should:
- Review and update their bids to account for price volatility
- Check for changes in tariffs and their impact on material costs
- Monitor current IRS rates and adjust bids accordingly
- Consider using per diem and mileage rates in their financial planning and budgeting
- Keep accurate records of mileage and per diem expenses to ensure accurate tax reporting
It's essential to note that these rates are subject to change, and it's crucial to stay informed about any updates or changes. By following these guidelines, construction businesses can better manage their costs and ensure compliance with IRS regulations.
Tax rules, limits and rates change. Confirm current figures with the IRS or your accountant before you file.
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