When to switch your local SEO attribution method

What to take away

Switch method when a budget split depends on the answer, when converting journeys average more than three touchpoints, or when the modelled total moves without any change in spend, rankings or tracking.
Keep last-click as the headline for narrow decisions, such as which service page earns calls, and add a modelled column for channel-budget decisions.
Write the rule, the lookback window and the switch date into the template before anything changes, then re-baseline for one full reporting period.
Report the gap as a range, for example between 62 and 88 enquiries a month, rather than picking whichever number sounds stronger.

Five triggers for switching method

Attribution answers which channel gets credit, and the method has to match the decision in front of you. The local SEO measurement and reporting guide shows the wider reporting structure these triggers sit inside, which is worth reading before you redraw a template.

Budget splitmoney is moving between paid search, social and local SEO, and assisted value changes where it should go.
Journey length: the path report shows converting journeys averaging more than three touchpoints.
Branded endingsmany organic conversions finish with a branded search, which flatters last-click credit.
Model driftthe modelled total moves by roughly 10% month on month with no change in spend, rankings or tracking.
Client challengethe paid report and the organic report both claim the same enquiry, and nobody can explain the gap.

Which method fits the decision

The tool matters less than the decision the number will support.

Method

Which landing or service page earns calls: Last-click
How to split budget between channels: Modelled, position-based, 30-day lookback
Whether to keep a paid campaign running: Both, side by side

Why it fits

Which landing or service page earns calls: Auditable, and the client sees the same number in their own analytics
How to split budget between channels: Credits the paid social and review touchpoints that assisted
Whether to keep a paid campaign running: Shows a range rather than one flattering figure

Many England agencies publish both columns and label each one, so the client sees a method difference rather than a data error.

Which attribution method to use

Deciding landing page or service page performance?

Yes

Use last-click

Deciding budget split between channels?

Two reports that disagree are usually two rules, not two truths. Name the rule before you blame the data.

Example: one month under two methods

Illustrative figures for a Leeds dental practice over one month, drawn from one set of enquiries.

One month under two methods

Last-click organic enquiries62
Modelled assisted conversions, position-based, 30-day lookback: 88
Gap between the two26
Paid search, last-click31; paid search, modelled: 22
Decisionkeep last-click as the headline, add the modelled column, hold the budget split until the next full period.

The same month supports two honest sentences. "Organic search produced 62 enquiries" is defensible because it is labelled last-click. "Organic search influenced 88 conversions" is also defensible, provided the rule and lookback window sit beside it. The local SEO reporting dashboard in England covers the column layout and source labels that keep this readable.

How to switch in five steps

Fix the method and the lookback window, then write the rule into the report template.
Record the switch date and the reason on the same page as the numbers.
Run both methods side by side for one full reporting period.
Re-baseline the comparison line, so old and new series are never mixed in one trend.
Explain the change to the client in one sentence, including the effect on the totals.

A switch made mid-quarter breaks month-on-month comparison. If the change cannot wait, publish both series until the period ends.

Where official data fits, and where it does not

The Office for National Statistics publishes economic output and productivity data, which agencies use to frame local market value by area and sector. Treat it as market context, never as a forecast for one client.

When attribution data feeds a follow-up campaign, the business-to-business marketing rules from the Information Commissioner's Office cover outreach and consent.

Performance claims have a precedent bank in the ASA's published rulings, which is worth reading before a modelled number reaches a client deck.

Common questions

What is the clearest single trigger to switch?

Model drift. If the modelled total moves by roughly 10% with no change in spend, rankings or tracking, the rule is producing noise.

Can I run last-click and modelled credit in one report?

Yes, provided each column names its method and its lookback window. Unlabelled mixing causes the disputes, not the mixing itself.

How often should the method change?

Rarely, and never mid-quarter. Fix the rule for a reporting period, record the change date and re-baseline before the next comparison. A local SEO budget template keeps the split figures in one place, and each figure needs a named source before a client signs off the plan.