Bid capacity formula: how to calculate available bid capacity

Works tenders ask one question that turnover and experience don't: with the jobs you already hold, can you take on this one too? The bid capacity formula answers it. This guide explains each letter of A × M × N − B, works through an example, compares the versions used by the Department of Expenditure (DoE), CPWD and MoRTH, and shows how to prepare the statement of commitments.

What bid capacity means in a tender

Bid capacity is a qualification criterion for works contracts. It sits alongside turnover, similar work and net worth, which our eligibility criteria guide covers. Like them, it is pass or fail: extra capacity earns you nothing in an L1 tender.

Documents use different names for the same idea:

• Available bid capacity: the DoE's Manual for Procurement of Works 2025 (para 3.9.1-4-f).
• Assessed available bid capacity: MoRTH's standard RFP for highway works on EPC mode.
• Bidding capacity: CPWD's bid formats in its SOP 2022.

People also say residual bid capacity, meaning what's left after your current commitments. It's the same calculation.

The works manual lists bid capacity among the pre-qualification criteria and applies them to post-qualification too (para 4.2.6-2). There is one exception for small contractors. In small contracts, for example repairs up to ₹60 lakh, the department may skip the experience and bid capacity tests if you meet the financial, staff and equipment criteria. You can hold no more than 2 contracts on these relaxed terms at a time (para 4.2.6-3).

The bid capacity formula: A × M × N − B

The DoE works manual gives the formula "generally used":

Available bid capacity = A × M × N − B

A: your best year of work

The manual defines A as the "maximum value of engineering (Civil/ Electrical/ Mechanical as relevant to work being procured) works executed in any one year during the last five years (updated at the current price level), considering the completed as well as works in progress."

Three points follow from that wording:

• It's work executed in the year, not contracts signed. A job still running counts for the part you did that year.
• Only relevant engineering work counts. CPWD says "turnover in construction works" and MoRTH says "civil engineering works", so trading sales and other income don't fit.
• Old years are updated to today's prices. The tender says how. CPWD adds 7% a year, simple. MoRTH's February 2026 RFP gives a table of factors running from 1.00 to 1.20 across the five years.

CPWD also looks back further: its A covers the best year of the last seven years, not five.

M: the multiplier

M lets you take on more than your best year's output, since work runs in parallel. The DoE manual calls it a "Multiplier Factor (usually 1.5)", and CPWD's formats fix it at 1.5. MoRTH's EPC RFP uses 2.5. Always take M from your own tender.

N: the completion period

N is the "number of years prescribed for completion of the work in question". It is in years, so 18 months is 1.5 and 9 months is 0.75. A short completion period cuts your capacity, because N multiplies A.

B: what you already owe

B is the "value (updated at the current price level) of the existing commitments and ongoing works to be completed in the next 'N' years". Two details catch bidders out:

• Works you've won but not started count. MoRTH's RFP adds works where you "emerged as the winner", even if the letter of award (LoA) isn't issued by the day before the financial bids are opened.
• The date matters. MoRTH assesses your bid capacity as on the day before the financial bids are opened.

Bid capacity formulas in central documents compared

In the MoRTH version, C is the early-completion bonus you received on EPC projects in the last five years, updated the same way. Bonus is taken out of A and added back as C.

So the formula isn't the same everywhere. A state PWD or a PSU may write its own. The tender's clause is the one that counts.

Worked example: calculating your available bid capacity

Say you're bidding for a road work with an estimated cost of ₹12 crore and 18 months to complete. The tender uses A × M × N − B with M = 1.5. Suppose it tells you to update each past year by 5% for every year of age. (These numbers are made up for illustration. Use your tender's own method.)

Step 1: find A

A = ₹9.90 crore. Notice that 2023-24 beats your latest year once both are updated. Always update every year before you pick the highest.

Step 2: find B

N is 1.5 years, so count what you must still execute in the next 18 months.

B = ₹7.9 crore. For the drainage work, only the part due within N years counts. MoRTH's format asks for your anticipated value of work in that period and uses a proportionate value if you don't give one, as done here.

Step 3: apply the formula

A × M × N − B = 9.90 × 1.5 × 1.5 − 7.9 = 22.28 − 7.9 = ₹14.38 crore

That's more than the ₹12 crore estimated cost, so you qualify.

What changes the answer

• Whole balances counted. CPWD's Form C-3 works out each commitment as contract value × remaining percentage. With the full ₹4.5 crore of drainage work in B, B is ₹9.7 crore and your capacity is ₹12.58 crore. You still qualify, just.
• A shorter job. With 12 months to complete, N is 1 and B is ₹7.0 crore (₹1.8 crore of the drainage work now falls within the period). Capacity is 9.90 × 1.5 × 1 − 7.0 = ₹7.85 crore, and you fail.
• MoRTH's multiplier. With 2.5 in place of 1.5, the same firm has 9.90 × 1.5 × 2.5 − 7.9 = ₹29.23 crore.

How to prepare the statement of existing commitments

B is where most of the work and most of the risk lies. Prepare it like this:

1. List every job you hold. Include ongoing works, works awarded but not started, and works where you are the declared winner if the tender asks for them. For a joint venture (JV) job, MoRTH's format has a column for your percentage of participation.
2. Find the balance of each job. Take the contract value and subtract the work done to date, from your latest measured bill.
3. Work out the part due within N years. If the job ends within N, take the whole balance. If it runs beyond, take the part your work programme shows within N, unless the tender's form says otherwise.
4. Update to current prices if the tender asks, using its factors.
5. Fill the tender's format. CPWD uses Form C-3; MoRTH uses Annexure VI of Appendix-IA. Expect columns for the owner, contract value, start and completion dates, progress, and an officer's name and phone number for reference.
6. Get it certified as the tender says. MoRTH wants the statement countersigned by the client's engineer, not below Executive Engineer, and verified by your statutory auditor. A in that RFP is certified by the statutory auditor too.
7. Total it, and show the sum. Write out A, N, B and the result, as the forms do, so the evaluator can check your arithmetic.

Bid capacity in a joint venture

Rules for JVs vary by tender. In MoRTH's EPC RFP:

• A JV can have at most 2 members, and each must hold at least 26%.
• The lead member must meet at least 60% of the bid capacity requirement, and the other member at least 20%.
• Together, the JV must meet 100% of it.

The DoE works manual allows JVs in larger packages (its example is above ₹10 crore), suggests a limit of about three partners, and gives a template for JV qualification in Annexure 13 (para 4.6.2-3). Check the JV clause before you plan to combine capacities.

How to improve your bid capacity

You can't change the formula, but you can change what goes into it:

• Close out finished jobs. Work that is complete drops out of B. Get your completion certificate issued and filed promptly.
• Keep your yearly figures ready. A counts work in progress, not just completed jobs, so keep CA-certified yearly figures of work executed.
• Match tenders to your capacity. A longer completion period raises N, so a job of the same value over 24 months needs less A than one over 12 months.
• Bid with a partner where the tender allows a JV, within the share rules above.

If you are a CPWD-enlisted contractor, note that the bidding capacity rule applies to you too. See our guide to CPWD contractor enlistment.

You can find live works from CPWD, state PWDs and other departments on GovtTenderHub's civil works tenders page, and highway work under NHAI tenders.

Common questions

What is the bid capacity formula?

The usual formula is A × M × N − B. A is your best year of works executed in the last five years at current prices, M is a multiplier, N is the years allowed to finish the new work, and B is your existing commitments due in that time. Your tender may change the details.

What is the value of M in bid capacity?

The DoE's works manual says M is "usually 1.5", and CPWD's bid formats use 1.5. MoRTH's highway EPC tenders use 2.5. Take the figure from the qualification clause of your tender.

Is available bid capacity the same as residual bid capacity?

Yes, in practice. Both mean the capacity left after deducting your existing commitments (B) from A × M × N. Documents also call it assessed available bid capacity or bidding capacity.

Does bid capacity apply to CPWD enlisted contractors?

Yes. CPWD's bid formats say bidding capacity is "applicable for CPWD enlisted contractors also". Your capacity must be equal to or more than the estimated cost put to tender.

How do I calculate A in bid capacity?

Take the value of works you executed in each of the last five financial years (seven for CPWD), update each to current prices as the tender says, and pick the highest. Include work done on jobs still in progress.

What if my bid capacity is less than the estimated cost?

You don't qualify, however low your price. You can bid for smaller works, wait until current jobs finish and leave B, or join a JV if the tender allows one.