When you buy leads from a provider, the per-lead cost is only part of the equation. How you pay — the commercial model — affects your cash flow, your risk exposure, and your relationship with the provider. The two most common models in financial services lead generation are pay per lead and retainer arrangements.

Both have genuine strengths and weaknesses. This guide walks through each one honestly so you can decide which fits your business.

Pay Per Lead: How It Works

The pay-per-lead model is exactly what it sounds like. You pay a fixed price for each lead delivered, with no commitment to volume, no monthly fees, and no lock-in period. If you receive 15 leads in a week at £30 each, you pay £450. If you need to pause the following week, you pay nothing.

This is the most common model for brokers who are new to buying leads, and it's the model most providers default to. It offers maximum flexibility and minimum commitment.

The commercial dynamics

Under pay per lead, all the generation risk sits with the provider. They invest in advertising, build websites, run campaigns, and absorb the cost of any leads that fail their own quality checks before delivery. You only pay for what arrives in your inbox or CRM.

The provider's incentive is to generate volume at a quality level that keeps you buying. If the quality drops and you stop ordering, they lose revenue. This alignment of incentives is one of the model's strengths — the provider needs to keep you happy to keep you as a customer.

Retainer Model: How It Works

A retainer arrangement involves committing to a minimum volume of leads over a set period — typically weekly or monthly. In exchange for this commitment, you receive a discounted per-lead price. For example, where a pay-per-lead client might pay £35 per mortgage lead, a retainer client taking 40 leads per week might pay £28.

Retainer arrangements vary between providers. Some require a fixed monthly payment regardless of delivery. Others structure it as a minimum volume commitment with payment per lead delivered. The specifics matter, so read the terms carefully.

The commercial dynamics

Under a retainer, you're sharing some of the generation risk with the provider. You're committing to a certain spend, which gives the provider revenue predictability and allows them to allocate dedicated advertising budget to your account. In return, you get better pricing and often priority delivery during busy periods.

The provider's incentive shifts slightly. They're guaranteed a certain revenue regardless of short-term quality fluctuations, which can be both good and bad. A good provider uses this stability to invest more in quality. A poor one might become complacent.

Pay Per Lead: Pros and Cons

Pros

  • Maximum flexibility. Scale up during quiet periods when you have capacity. Scale down when you're busy with existing clients. Pause entirely if you need to. You're never locked into spending money when it doesn't make sense.
  • No upfront commitment. You can test a provider's quality with a small batch of leads without committing to a minimum spend. This makes it ideal for new relationships and for brokers who are new to buying leads.
  • Cash flow predictability on your terms. You control the volume, so you control the spend. You're never surprised by a large invoice for leads you didn't want or couldn't handle.
  • Easy to compare providers. Because there's no commitment, you can test multiple providers simultaneously with small batches and compare results directly.
  • Lower risk. If the leads don't convert, you can stop immediately. There's no remaining balance to pay or contract to negotiate out of.

Cons

  • Higher per-lead cost. Without a volume commitment, you'll typically pay the standard rate. The difference can be 15-25% compared to retainer pricing, which adds up over time.
  • No volume guarantee. During busy periods, a provider may prioritise retainer clients over pay-per-lead clients. If lead supply is limited, you might receive fewer leads than you'd like.
  • Less provider investment. Without guaranteed revenue from your account, the provider may not dedicate specific advertising campaigns or resources to your criteria. You're drawing from a shared pool rather than a dedicated pipeline.
  • Variable flow. Lead volumes can fluctuate week to week based on market conditions, seasonal demand, and the provider's overall supply. This makes pipeline planning harder.

Retainer Model: Pros and Cons

Pros

  • Lower per-lead cost. The most obvious advantage. Depending on the volume commitment and provider, you could save 15-25% per lead compared to pay-per-lead pricing. On 40 leads per week, that's a meaningful saving.
  • Consistent volume. The provider commits to delivering your agreed volume each week or month, which makes pipeline planning and cash flow forecasting much easier.
  • Priority delivery. During peak demand periods, retainer clients are typically served first. This can mean higher-quality leads and more consistent supply when the market is competitive.
  • Dedicated resource. Many providers will allocate specific advertising budget or campaigns to retainer clients, which can lead to better-targeted leads tailored to your criteria.
  • Economies of scale. At higher volumes, the maths simply works better. The saving per lead multiplied by a large volume creates substantial cost advantages over time.

Cons

  • Financial commitment. You're committing to a minimum spend regardless of your capacity to work the leads. If you get overwhelmed with existing business, you're still paying for new leads that you may not be able to follow up properly.
  • Higher upfront risk. If the leads don't convert as well as expected, you're locked into continuing to spend until the retainer period or notice period ends. The flexibility to simply stop isn't there.
  • Potential complacency. Because the provider has guaranteed revenue, there's a risk — particularly with less reputable providers — that quality monitoring becomes less rigorous. This isn't inevitable, but it's a risk to manage.
  • Cash flow pressure. A retainer represents a fixed cost that you need to cover regardless of your monthly income. For sole practitioners or small firms with variable revenue, this can create cash flow challenges.
  • Harder to switch providers. If you're mid-retainer and unhappy with quality, switching involves either waiting out the notice period or potentially losing money on the remaining commitment.

Cash Flow Implications

This is the aspect that's most often overlooked, and it deserves specific attention.

Financial services income is lumpy. A mortgage broker might complete three cases in one week and none the next. A protection adviser might have a great month followed by a quiet one. Your lead spending needs to work within this reality.

Pay per lead lets you match your spending to your cash flow. Had a quiet month with fewer completions? Reduce your lead volume. Just completed several large cases? Scale up while you have the cash to invest.

Retainer creates a fixed cost that doesn't flex with your income. You need to be confident that your average monthly revenue comfortably covers the retainer commitment, with enough buffer for the inevitable quiet months. As a rough guide, your retainer cost shouldn't exceed 15-20% of your average monthly revenue unless you're deliberately investing in growth.

If you're unsure, start with pay per lead. You can always move to a retainer once you've proven the ROI and have confidence in your average conversion rates.

When Each Model Works Best

Pay per lead is generally better for:

  • New buyers. If you've never bought leads before, start here. You need the flexibility to learn what works without financial pressure.
  • Sole practitioners. When you're the only person working the leads, your capacity varies week to week. Flexibility matters more than per-lead savings.
  • Testing new providers. Always start on pay per lead with a new provider. Prove the quality before considering a retainer.
  • Seasonal businesses. If your business has significant seasonal variation, the ability to scale up and down is valuable.
  • Tight cash flow. If you're not confident in your monthly cash position, the fixed commitment of a retainer adds unnecessary stress.

Retainer is generally better for:

  • Established buyers. If you've been buying leads for months, know your conversion rates, and have a proven process, a retainer makes financial sense.
  • Multi-adviser firms. With several people to work leads, you have consistent capacity and benefit from consistent supply.
  • Growth-focused businesses. If you're deliberately investing in scaling your pipeline, the lower per-lead cost and guaranteed volume of a retainer accelerate growth.
  • Proven provider relationships. Once you trust a provider and have consistent results, the retainer's lower cost and priority delivery are genuine advantages.

The Hybrid Approach

Some brokers and firms use a hybrid model: a retainer with one trusted provider for their core lead volume, supplemented by pay-per-lead arrangements with one or two other providers. This gives them the cost benefits of a retainer for most of their leads, with the flexibility of pay per lead for additional volume or different lead types.

This approach works particularly well for firms that are growing. The retainer covers the baseline, and pay-per-lead spending can be dialled up or down based on capacity and cash flow.

Questions to Ask Before Choosing

Before committing to either model, answer these questions honestly:

  • What is my average monthly revenue, and what percentage can I comfortably allocate to lead generation?
  • How many leads can I realistically work per week, every week?
  • How variable is my cash flow month to month?
  • Have I tested this provider's leads and proven the conversion rate?
  • What happens if the leads stop converting — can I adjust my spend quickly?

If you're not sure about the answers, default to pay per lead. The flexibility premium is worth paying while you figure things out.

For more on evaluating lead providers and understanding pricing, see our pricing page or our guide to choosing a lead provider.