Digital Marketing Agency Cost Calculator UK 2026

Digital marketing agency retainers in the UK typically cost between £500 and £5,000 per month depending on the service type, business size, and contract length. SEO campaigns for small businesses start at £500 per month and rise to £2,500 for competitive sectors, while PPC management ranges from £400 to £2,000 per month on top of your ad spend. Full-service agencies covering SEO, PPC, content, and social media charge £1,500 to £5,000 per month for SMEs, with enterprise accounts exceeding £10,000.

Contract length matters — 12-month commitments typically attract 10% to 15% discounts compared to rolling monthly agreements. Setup fees add a further £250 to £1,500 in the first month depending on the complexity of your campaigns. For a full breakdown of what agencies charge and what you get, see our digital marketing agency costs guide. This calculator estimates your likely monthly retainer based on service type, business size, and contract length.

How to Use This Calculator

Select your primary service — choose the marketing channel you want to invest in most (SEO, PPC, social, content, or full service).

Choose your business size — larger businesses need more complex campaigns, which increases agency costs.

Set the contract length — longer commitments typically unlock 5–15% discounts on monthly retainers.

Review your estimated monthly retainer and total contract cost including setup fees and add-on services.

What Affects Digital Marketing Agency Costs

Agency pricing varies significantly based on six key factors. Understanding these helps you evaluate whether a quote is competitive or inflated.

Service type. Single-channel campaigns (SEO only or PPC only) cost less than multi-channel packages. An SEO-only retainer for a local business might be £500 per month, while a full-service package covering SEO, PPC, content marketing, and social media management typically starts at £1,500 per month. Our best digital marketing agencies guide compares what each agency includes at different price points.

Business size and competition. A local plumber competing in one town needs far less work than a national e-commerce brand targeting hundreds of keywords. Agencies price based on the scope of work required, not just their hourly rates. A 10-person business in a low-competition niche might pay £600 per month for SEO, while a 100-person company in financial services could pay £3,000 per month for the same channel.

Contract length. Most agencies offer tiered pricing based on commitment. Month-to-month flexibility costs more — typically 10% to 20% above the 12-month rate. Six-month contracts sit in between. The trade-off is flexibility versus cost: longer commitments save money but lock you in if the agency underperforms.

Ad spend (PPC only). PPC management fees are usually separate from your ad budget. Agencies charge either a flat fee (£400–£2,000 per month) or a percentage of ad spend (typically 10–20%). For ad budgets under £3,000 per month, a flat fee usually works out cheaper. Our B2B lead generation guide covers PPC pricing in more detail.

Setup and onboarding. Most agencies charge a one-off setup fee covering initial audits, strategy development, and account configuration. This ranges from £250 for a simple PPC setup to £1,500 for a comprehensive technical SEO audit with content strategy. Some agencies waive setup fees on 12-month contracts.

Add-on services. Conversion rate optimisation, email marketing, and landing page design are often priced separately. Budget an additional £200 to £800 per month for each add-on. Bundling add-ons into a full-service package is almost always cheaper than buying them individually.

How We Calculated These Estimates

This calculator uses pricing data collected from UK digital marketing agencies during Q1 2026. We surveyed published rate cards and obtained quotes from agencies across different size tiers — freelancers, boutique agencies (5–15 staff), and full-service agencies (15+ staff).

Base retainer ranges are calculated from median pricing for each service type and business size combination. Contract length discounts are applied as a percentage reduction: 5% for 6-month commitments and 12.5% for 12-month commitments, reflecting the average discount offered across our sample. Setup fees are estimated based on service complexity and the typical onboarding scope for each business size bracket.

All figures exclude VAT. Actual agency quotes may vary based on your specific industry, competitive landscape, and the agency’s capacity. We recommend getting at least three quotes before committing — use the button below to compare offers from vetted UK agencies.