Stop Under-Bidding.
Start Winning Profitable Jobs.
The plug-and-play estimating spreadsheet and professional template vault designed for contractors. Bid jobs in minutes, lock in 30%+ profit margins, and impress premium clients.
Smart Bidding Dashboard
Fully automated calculations
Are you making these 3 costly bidding mistakes?
Most skilled contractors lose money not because their work is bad, but because their pricing math is wrong.
1. The "Amateur Markup" Trap
Multiplying your cost by 1.2 to get a "20% margin" is mathematically wrong. Your actual margin is only 16.6%. You are leaving thousands of dollars in pure net profit on the table on every single job without realizing it.
2. The Invisible Overhead Leak
If you don't calculate your gas, tool wear, phone bills, insurance, and admin hours into the base cost of every bid, you aren't paying yourself. You're working for free half the time to pay your bills.
3. Scribbled/Text-Message Bids
Texting a client "It will be about $3,500" makes you look cheap. Premium clients pay premium prices to companies that present professional, transparent breakdown proposals. Professionalism commands higher rates.
See the Margin Math Difference in Real Time
Use this interactive bidding calculator to see how a professional estimates a job. Input your project parameters and see how ContractorOS™ protects your business from the "Amateur Markup" math error that shrinks profits.
🔍 The Formula ContractorOS Uses:
Bid Price = Breakeven Cost / (1 - Desired Margin %)
This is standard B2B corporate accounting. It guarantees that if you want a 20% margin, exactly 20% of your total check is profit.
What is inside the ContractorOS™ Vault?
A complete professional toolbox to run the back-office of your contracting business like a Fortune 500 company.
Loved by Contractors Nationwide
See how construction professionals, remodelers, and tradesmen use ContractorOS™ to buy back their evenings and grow their profit margins.
"I was using a notebook and a calculator for bids. I missed factoring in gas and my workshop rent. The ContractorOS spreadsheet showed me I was losing $400 a job. I raised my prices using their proposal template, and landed a $12k kitchen remodel on my first try. Paid for itself instantly."
"Client proposals used to take me 2 hours every evening. With these templates and the estimate tool, I can copy-paste details and text them a professional PDF in 10 minutes. The Change Order form also saved me $1,800 last week when a client wanted different tiling last-minute."
"Commercial landscaping jobs require professional bidding tables. The spreadsheet outputs the exact format they want. I love that it calculates markup vs margin properly. Landing contracts with commercial property managers is much easier now."
Get Three Premium Bonuses Free Today Only
Accelerate your business with these profit-maximizing tools, included with your ContractorOS purchase for a limited time.
Truck Cab Multiplier Cheat Sheet
A printable quick-quote reference sheet to calculate margins without markup math errors. Keep it in your truck or on your clipboard.
Text & Email Script Vault
Pre-written follow-up templates for proposals, quotes, and invoice reminders to close clients without awkward phone calls.
Contract Safeguards Checklist
A 10-point inspection list to verify scope boundary and payment schedules before signing any client contract.
Secure Lifetime Access Today
No subscriptions. No hidden fees. One-time payment to protect your business forever.
Our 100% Quality & Support Guarantee
We stand behind the accuracy and professional design of our estimating spreadsheet models and contract templates. Since this is an instantly downloadable digital product, all sales are final and non-refundable. However, we guarantee that all files are fully functional and virus-free. If you experience any technical issues, file corruption, or download delivery problems, email our support team at support@contractoros.com and we will resolve it or issue a full refund immediately.
— Jersey Demic, Creator of ContractorOS™
📂 What You Get Instantly:
Once checkout is completed, you get immediate download access to these files:
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.xlsx
Smart Estimating Engine Microsoft Excel & Google Sheets formats
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.docx
12+ Premium Client Proposal & Contract Templates Fully editable Word files & Canva edit links
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.pdf
Quick-Start Training Guide Step-by-step PDF manual on profitable bidding
ContractorOS™ Complete Vault
The complete operational bidding spreadsheet and contract templates vault.
One-time payment, no monthly subscription fees
What's Included in the Vault:
- ✓ The Smart Estimating Spreadsheet Model (Excel & Google Sheets)
- ✓ 12+ B2B Proposal, Invoice, and Quote Templates
- ✓ Legal Subcontractor Agreements & Change Order Forms
- ✓ Step-by-Step PDF QuickStart Implementation Guide
- ✓ Lifetime free updates & permanent email download access
Frequently Asked Questions
Got questions? We've got answers.
Do I need a monthly software subscription?
No. ContractorOS™ is a one-time purchase. Once you buy it, you own it forever. There are zero monthly charges, zero renewal fees, and all future updates are free.
Does this work on mobile devices?
Yes. The templates can be edited using Microsoft Word or Canva on your phone. The Estimating Engine spreadsheet works on Excel (iOS & Android) and Google Sheets. However, we recommend using a tablet or computer for the best experience when building complex bids.
What programs do I need to open the files?
You only need Microsoft Excel (or a free Google account for Google Sheets) to run the calculator spreadsheet, and Microsoft Word or Canva to edit the proposals and contracts. A free PDF reader opens the guide.
What if I am not good at math or spreadsheets?
That's exactly why we built this. All formulas are pre-programmed and locked. You only type in your materials cost, estimated labor hours, hourly rate, and target margin. The spreadsheet does all the math, overhead allocation, and quote writing for you.
Is my transaction secure?
Yes. All payments are processed directly by Stripe on their secure HTTPS network. We never see or store your credit card or payment information.