The safest way to switch PPC agencies is to keep the client's existing ad accounts, preserve their history and understand the decisions behind the current setup before changing it. Give the incoming team the right access, document targets and constraints, confirm tracking, and make the first changes small enough to evaluate.
A platform can retain campaign history, but it cannot explain every human decision. The account may show that a campaign was paused, for example, without showing whether the reason was weak lead quality, an expired offer or a client request. A good handoff preserves both the data and the operating context.
Preserve the account before permissions change
The first rule of switching PPC agencies is simple: do not replace an account merely because the team managing it has changed.
The client should continue to own the Google, Meta and TikTok assets. The outgoing agency can be removed after the incoming agency has working access, but ownership should not move with either agency.
Keeping the existing accounts preserves campaign history, conversion records, audiences, creative history and prior changes. It also lets the incoming buyer distinguish between a structural problem and a recent performance swing.
Before anyone changes permissions, confirm who owns:
- The Google Ads client account and its billing profile
- The Google Ads manager relationships
- The Meta business portfolio, ad accounts, pages, pixels and catalogs
- The TikTok business center, ad accounts, pixels and audiences
- Analytics properties and tag management containers
- Landing pages, domains and form systems
- Creative source files and approved copy
- Call tracking and customer relationship management connections
Access should be additive during the handoff. Add the new agency, confirm that its team can see and manage everything it needs, then remove the old access on the agreed date.
The client should know exactly who will have administrator permissions and why. If the ownership picture is unclear, resolve it before campaign work begins. This guide to ad account ownership and agency handoffs covers the issue in more detail.
Capture a baseline before touching the account
Take a dated snapshot of the current state. Record active campaigns, budgets, bid strategies, conversion actions, attribution settings, audiences, exclusions and account-level rules.
Also export the current change history and note any changes that are already scheduled. A campaign may look stable while a promotion, budget shift or automated rule is waiting to take effect.
The baseline gives the new team a fixed point of comparison. Without it, every later discussion depends on memory.
Ask for the decisions, not just the files
A complete handoff explains how the account has been run. A folder of exports is useful, but the incoming buyer also needs the rules behind them.
Ask the outgoing team for:
| Area | What to request | Why it matters |
|---|---|---|
| Goals | Current CPA, ROAS or other campaign targets | The account may contain campaigns with different jobs |
| Budgets | Daily limits, monthly plans and pacing rules | Platform budgets may not show the client's full plan |
| Tracking | Conversion definitions, primary actions and known gaps | A visible conversion may not represent a qualified lead or sale |
| Structure | Naming rules, campaign roles and market divisions | Similar campaigns may serve different locations or offers |
| Creative | Source files, approval status and expiration dates | An active ad may depend on an offer that is about to end |
| Tests | Current hypothesis, control, variant and decision rule | Editing a live test can make the result harder to read |
| Exclusions | Negative keywords, audience exclusions and placement rules | These often contain lessons learned through prior spend |
| Reporting | Client metrics, reporting schedule and data sources | The new team must reproduce the agreed view of performance |
| Constraints | Brand rules, legal limits and prohibited changes | Not every available platform action is acceptable to the client |
| History | Major changes and why they were made | Change history shows what happened, not always why |
The request should be neutral and specific. The goal is continuity, not a review of the outgoing team's competence.
If no written decision record exists, build one from the account history and a handoff conversation. Mark uncertain conclusions as assumptions. That is better than allowing a guess to become an unwritten rule.
Separate platform learning from business learning
Ad platforms learn from delivery and conversion signals. The agency learns from the client's sales process, offer calendar, lead quality and operating limits. Both matter, but they live in different places.
For example, a campaign may appear efficient on cost per lead while the client knows those leads rarely become customers. The platform data is still valid. It is simply incomplete without the business result.
Preserve both layers:
- What the account recorded
- What the client and prior team learned from the resulting business
This is also why conversion tracking must be checked before strategy changes begin. If definitions changed during the handoff, the new agency may compare different outcomes under the same label.
Tell the client what will happen before anything changes
A client should not discover the transition through a new report, an access notification or an unexpected performance change.
Give the client a short transition plan that covers:
- Who owns each account
- Who is being added and removed
- When permissions will change
- Which campaigns will remain untouched at first
- How budgets will be monitored
- How tracking will be checked
- Which changes require approval
- How tests and results will be documented
- What the first report will contain
- Who handles urgent account issues
State what the incoming agency does not yet know. That creates realistic expectations without undermining confidence.
A useful client message might say:
Example: We will keep your existing ad accounts and tracking in place. During the opening period, we will confirm access, budgets, conversion definitions and active tests. We will bring any material structural change to you with the reason, expected effect and rollback plan before it is made.
That message gives the client a clear operating model. It also protects the buyer from pressure to make visible changes before the account has been understood.
Agree on the approval line
Not every edit needs the same process. Define which actions the agency can take under its existing mandate and which ones need client approval.
Budget increases, new offers, new markets and changes to primary conversion definitions often deserve explicit confirmation. Routine search term exclusions or a controlled creative test may already fall within the agency's working authority.
The exact line will differ by client. What matters is writing it down before an urgent decision arrives.
Run a calm first month
The first month is not a contest to produce the longest change log. It is a controlled transfer of responsibility.
Opening days: establish control
Confirm that the team can access every required account and data source. Check billing status, active ads, campaign budgets, conversion actions, landing pages and any offer expiration dates.
Look for immediate risks such as:
- A payment problem
- A broken landing page
- A disconnected conversion action
- A budget that no longer matches the approved plan
- An expired promotion still running
- A test with no documented control or decision rule
- An automated rule owned by an account that is about to lose access
Fix urgent operational problems first. Record what changed, why it changed and how to reverse it.
Early weeks: learn the account's rhythm
Review performance by campaign purpose, not just by platform. Brand search, prospecting, remarketing and location campaigns should not all be judged by one blended target.
Use the client's real operating targets where they exist. If the account has a fallback target, document it, then record campaign-specific exceptions.
Example: Say a campaign has a $50 target CPA while the account fallback is higher. The incoming buyer should preserve that distinction instead of forcing every campaign toward the account-level number.
Review the change history alongside results. A recent decline may follow a budget change, a landing page edit or a new conversion definition. Rebuilding the campaign would hide that explanation rather than solve it.
The related Google Ads account review checklist can help the new team cover the account mechanics without turning the handoff into an immediate rebuild.
Later in the month: make controlled changes
Prioritize changes by likely impact, confidence and reversibility. State the reasoning before the edit is approved.
A useful change record includes:
- The observed problem
- The numbers supporting it
- The proposed change
- What must remain untouched
- The expected direction of the result
- The point at which the team will evaluate it
- The rollback plan
Avoid changing budget, bidding, targeting, creative and landing pages at the same time unless an urgent business issue requires it. When several variables move together, the account may improve or decline without teaching the team much.
The first client report should separate three things: inherited conditions, transition fixes and new agency decisions. That keeps accountability fair and makes the next report easier to interpret.
Frequently asked questions
What happens to Google Ads performance when you switch agencies?
Changing agencies does not erase the account's campaign history or platform data when the client keeps the existing account. Performance can still move if access, tracking, budgets, bidding, creative or landing pages are changed during the handoff.
Should a new agency rebuild the account?
Not by default. The new agency should first understand the existing structure, identify what is working and rebuild only where the expected benefit is clear.
What should you ask the previous agency for?
Ask for account access, tracking documentation, naming conventions, current targets, budget rules, active tests, creative files and a record of major decisions. Also confirm billing ownership, connected business assets and any scheduled changes.
How do you transfer ad accounts between agencies?
The client should keep ownership and grant the incoming agency the appropriate access through each platform's business or manager account. Confirm the new team can work safely before removing the outgoing team's access.
How long before a new agency improves results?
There is no responsible universal timeline because account volume, tracking quality, campaign maturity and the size of the changes all matter. The first month should establish control, protect what is working and create a reliable basis for evaluating improvements.
How Ads Arsenal supports the handoff today
Ads Arsenal keeps the client in control of its ad accounts. The agency or Ads Arsenal is added with administrator access, so that access can later be removed without losing the account or its data. Meta connects when the buyer signs in with a Meta account. While Ads Arsenal is in closed beta, Google connects through a manager-access request set up with the team on a short call.
Nothing changes until a person approves it. Ads Arsenal reads the account through the buyer's goals and constraints, explains each recommendation with the supporting numbers, confirms approved changes after they are written and grades them at 3, 7 and 14 days. It keeps what works for that account, and every approved change can be rolled back with one click.
Ads Arsenal is in a free design-partner beta for agencies and in-house teams running real spend on Google, Meta and TikTok. Become a design partner.