# Subcontractor Quote Calculator

> Calculate subcontractor quote step by step: Levelled quote = quote + excluded items.

Page: https://freecalculator.tech/tools/subcontractor-quote-calculator
Last reviewed: 2026-11-03

## Formula

Levelled quote = quote + excluded items. Carried amount = levelled × (1 + handling markup). Retainage held = quote × retainage%.

- Levelling adds excluded scope so different quotes can be compared fairly.
- All figures are entered; no rates are assumed.
- Retainage is held from the sub's payments, not added to your bid.
- Levelled quote = quote + excluded items. Carried amount = levelled × (1 + handling markup). Retainage held = quote × retainage%.
- Inputs used: Currency, Subcontractor quote, Value of items excluded from the quote, Your handling / coordination markup, Retainage to hold back.

## Inputs

- Currency
- Subcontractor quote
- Value of items excluded from the quote
- Your handling / coordination markup
- Retainage to hold back

## Worked example: Electrical sub quote

Quote 20,000, exclusions 1,500, 5% handling, 10% retainage.
1. Levelled = 20,000 + 1,500 = 21,500.
2. Carried = 21,500 × 1.05 = 22,575.
3. Retainage held = 20,000 × 10% = 2,000.

## Common questions

### What is quote levelling?

Adjusting quotes for missing or extra scope so they can be compared like for like before choosing a subcontractor.

### Why add a handling markup?

Managing a subcontractor costs supervision, coordination and risk. Many general contractors recover this with a markup.

### Is retainage a cost?

No. It is money held back from payments until completion, not an extra charge.

### How do I use the Subcontractor Quote Calculator?

Enter the required values for Currency, Subcontractor quote, Value of items excluded from the quote, Your handling / coordination markup, Retainage to hold back. The calculator applies the formula on this page and shows the main result with any supporting breakdown so you can check the arithmetic.

### What formula does the Subcontractor Quote Calculator use?

Levelled quote = quote + excluded items. Carried amount = levelled × (1 + handling markup). Retainage held = quote × retainage%. The visible formula section above lists the calculation path and the edge cases the page handles, so the result can be checked without relying on the form alone.

### Can the Subcontractor Quote Calculator be used for exact decisions?

Use it as a calculation aid, not as a substitute for checking the underlying rule, contract, policy, or professional advice that applies to your situation. When a result depends on local rules, personal details, prices, or dates, enter those values yourself and confirm them before acting.

## Limitations and assumptions

- Single quote at a time.
- Exclusion values are your estimates.
- No tax treatment.
- Results are estimates for planning and learning. Real designs, installations and bids must be checked by a qualified, licensed professional against the codes that apply where you work.
- The result depends on the values you enter for this subcontractor quote calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.

## Sources

- OpenStax (Rice University) — https://openstax.org/details/books/contemporary-mathematics

## Cite this page

- APA: Free Calculator. (2026, November 3). Subcontractor Quote Calculator. https://freecalculator.tech/tools/subcontractor-quote-calculator
- MLA: "Subcontractor Quote Calculator." Free Calculator, 3 Nov. 2026, https://freecalculator.tech/tools/subcontractor-quote-calculator.
- Link: Subcontractor Quote Calculator — Free Calculator, https://freecalculator.tech/tools/subcontractor-quote-calculator