How many leads do you actually need? Work backward from the revenue goal.

How many leads do you need? Start with the revenue goal and work backward:

• subtract what existing customers and dependable referrals will bring in; the gap is the job for marketing and any outbound sales effort, together
• divide the gap by what a new customer brings in during the year to get the number of new customers
• divide by your win rate to get qualified opportunities, then by the share of qualified leads that become opportunities

That gives you qualified leads for the year. Split it into a monthly number someone can check, using your own conversion rates rather than an industry average. Then test it against the budget: if the money can’t buy that many qualified leads at a cost you can afford, lower the goal, raise the budget, improve the rates, or don’t run the plan as it stands. Finding that out before the year starts is the point of doing the math.

The math, step by step

Here’s the whole chain, with made-up numbers you can swap for your own.

Step	Question	Example (made up)
Revenue goal	What do you want next year?	$12,000,000
Minus what you already expect	What will existing customers and dependable referrals bring in, net of customers you expect to lose?	$10,400,000
New-business gap	What has to come from new customers marketing helps win?	$1,600,000
÷ what a new customer brings in	How much does a typical new customer contribute inside the year you’re planning?	$100,000, so 16 new customers
÷ win rate	What share of qualified opportunities do you win?	One in four, so 64 opportunities
÷ lead-to-opportunity rate	What share of qualified leads become real opportunities?	60%, so about 107 qualified leads
÷ qualification rate	What share of raw inquiries turn out to be qualified?	30%, so about 357 inquiries

Use what a new customer contributes inside the year you’re planning, or plan against bookings and use that number all the way through. A customer who signs in October may bring in only a few months of revenue by December.

Spread across the year, this example needs about nine qualified leads a month, or two a week, out of roughly 30 inquiries a month. Treat that as a starting average: if your deals take months to close, set monthly or quarterly targets from when customers need to sign, not an even twelfth. It’s the number worth putting in front of the people producing leads, because it ties straight back to the revenue goal.

Start with the gap

The step that’s easiest to skip is the second one. Before anyone sets a lead target, ask out loud what relationships and existing customers are expected to carry, and get the room to agree that what’s left is the job for marketing and whoever else is chasing new business. If most of your revenue comes from customers you keep and grow, that gap may be much smaller than the goal suggests.

Take off what existing customers will bring in, net of the ones you expect to lose. Then estimate new business that arrives outside the marketing plan, like owner-led relationships and referrals, and be conservative with it: a referral forecast isn’t booked revenue, and some referrals are helped along by marketing in the first place. A target set from the whole revenue goal asks marketing for leads the company doesn’t need, then blames marketing when they don’t arrive.

Count qualified leads, and agree what that means

Do the math from the qualified stage up. Raw inquiry volume is a by-product, and it depends heavily on what you count. A model that counts every download and newsletter signup as a lead produces a far bigger target than one that counts only real prospects in your market, for exactly the same customers.

Count opportunities by company, too. Business purchases are often made by several people, so three contacts from one company may be three useful signals, but they’re one opportunity.

And agree what each stage means before you measure anything against it. Marketing and sales often use the same words for different things. In planning meetings I end up translating between the two, which is a sign the definitions should be written down. The way to grade sales prospects consistently is its own piece.

Use your own conversion rates

Search for conversion rate benchmarks and you’ll find confident tables that don’t agree with each other, mostly because each one counts a lead differently. Use them as a rough check at most, never as a budget input.

Your own rates are the ones worth planning on:

• Pull at least six months of history, ideally a full sales cycle, for each step, and measure groups of leads old enough to have finished. Recent opportunities haven’t had time to convert.
• Label which rates are backed by data and which are estimates, and set a date to replace the estimates with real numbers.
• If you’re unsure, run a low, middle and high case. The spread tells you how much risk is in the plan.

If you have no history yet, start with your best estimates and replace them as deals close.

I treat the close rate as something you can move, not a fixed fact of the business. In the example, raising the win rate from one in four to one in three cuts the qualified leads needed from about 107 to 80, with no extra marketing spend. That’s as much a lever on the lead number as buying more leads. Improving it needs its own plan, from tighter qualification to better proposals.

How much pipeline do you need?

Pipeline coverage is the value of your open, qualified opportunities divided by the revenue you need to close in a period. The common advice is to carry three times your target, but that only fits a win rate of about one in three.

A better first pass is one divided by your own win rate. At one in four, that’s four times the target; at 40%, it’s 2.5 times. Treat it as a starting estimate and test it against the opportunities likely to reach a decision in the period. Then adjust for what happens in your business: deal sizes, how long the cycle runs and how often close dates slip. Compare pipeline and target over the same period, and if you measure pipeline in dollars, use the share of pipeline dollars you win, since winning small deals and losing big ones distorts a count.

Coverage is only as honest as the pipeline behind it. Decide in advance how long a deal can go quiet before it counts as lost, and count only prospects you’ve actually qualified.

Long sales cycles change the timing

With a long sales cycle, the leads that produce next year’s revenue have to arrive well before next year. Use your own cycle length: if it’s nine months, a program that starts in January may not close much before the fourth quarter, even if it’s working. Say so before the money is spent, so nobody cancels a working program in month four.

While revenue catches up, judge it on what arrives first: qualified leads against plan, the quality of the conversations, and who’s asking for proposals.

When deal sizes vary a lot, averages break down. If one large pursuit is worth as much as five typical deals, count it that way and judge the pipeline in dollars, by the quarter. Otherwise a strong month followed by two empty ones looks like failure when it’s just how big deals arrive.

Where marketing’s number ends and sales’ begins

The chain crosses a handoff, and each side should own the part it can move. Draw the line where your company actually makes it: in some companies sales takes over at the first qualified conversation, in others a business development team qualifies leads first.

Marketing is accountable for the volume and fit of what it hands over. Sales is accountable for what happens after it accepts the handoff: how fast leads get followed up, how many become opportunities and how many close. Check, too, that sales can handle the volume the plan assumes; nine qualified leads a month is only useful if someone can work them. Holding marketing to a revenue number it can’t move mostly teaches everyone to argue about attribution.

Two habits keep the split honest. Sales records what happened to every lead, including the ones you lost, because without that nobody can calculate the rates in the chain. And every opportunity records where it started and whether marketing helped along the way (two separate fields, since a sales-sourced deal can still be marketing-assisted), so you don’t cut the channels doing quiet work.

Check the lead number against what you can afford

Once you know how many qualified leads you need, check whether the budget can pay for them. Start from the most you can afford to spend to win a customer. The made-up example in that post gives $15,000 for sales and marketing combined, or about $3,750 per qualified opportunity at one in four. Say $5,000 of each customer’s ceiling goes to selling it, leaving marketing $10,000.

Carry that through this example. One in four opportunities close and 60% of qualified leads become opportunities, so 15% of qualified leads become customers. At up to $10,000 per customer, marketing can afford about $1,500 per qualified lead, and 16 customers means spending at most $160,000 a year to win them. That’s a ceiling, not a forecast. To see what the plan will likely cost, multiply the qualified leads you need by what a qualified lead has actually cost you: at $1,200, 107 leads cost about $128,400. That figure has to fit two tests at once. Under the ceiling means each customer is worth winning; under the budget means you can pay for it. A plan can pass one and fail the other, and the costs per lead can rise as you buy more of them.

With one company I advise, I held the marketing budget fixed and ran the lead target backward through it. The spend couldn’t produce the opportunities the plan assumed, and it was better to say so before anyone started blaming the sales team or the marketing team for a number that was never possible. The choice that left was the real one: build the budget to the goal, or reset the goal.

When the numbers don’t fit, check the assumptions first (the gap, the timing, the stage definitions, the rates), then the economics. Only then decide what has to change: a lower goal, a bigger budget if the economics support it, better rates, or not running the plan as it stands. Testing the goal against the budget this way, before anyone is blamed for missing it, is covered in how much a company should spend on marketing, along with the costs that sit on top of winning new customers.

Your lead number

Put in your own goal and rates. The calculator works back to qualified leads a month and, if you add what leads have cost you, what marketing can afford per customer and the budget on the table, tells you whether the plan is a budget problem, an economics problem or neither.

Six numbers to watch every month

Once the plan is set, a short monthly view shows whether it's on track long before the year ends:

1. Revenue gap remaining against the new-business target.
2. Qualified leads against plan.
3. New qualified pipeline created against plan.
4. Win rate on qualified opportunities.
5. Pipeline coverage for the period ahead.
6. Cost per qualified lead against plan.

Common questions about lead targets

What's the difference between an MQL and an SQL?
As I use the terms, a marketing-qualified lead is one that looks worth the time to try from the form or voicemail alone, and a sales-qualified lead is one you've talked to and are sending a proposal to. Definitions vary between companies, so write down what each means at yours before measuring anything against them; I've laid mine out in how to grade sales prospects.

How many leads should my website generate?
Work it out from the chain: estimate what share of new customers you expect the website to bring in, apply that share to the qualified leads you need, and judge the site on qualified leads rather than form fills.

Setting marketing's number, splitting it fairly with sales and measuring it against the company's goals is a central part of what I do as a fractional CMO. You can start a conversation on Work With Me.