Smart Bidding · 2026

Smart Bidding
Strategies 2026:
The Expert Setup

By Heyitsjj13 min readUpdated March 2026

Smart Bidding sounds simple — set a target, let Google optimise. In practice, incorrect setup wastes thousands before the algorithm learns anything useful. This guide covers the exact setup sequence, target calibration rules, and learning phase strategies that separate accounts achieving 4x ROAS from those stuck in perpetual underperformance.

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Heyitsjj · Google Ads Malaysia

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tCPA, tROAS & Max Conversions decoded

📋 Table of Contents

The 4 Google Ads Smart Bidding Strategies Explained
How to Set tCPA and tROAS Targets Correctly
The Learning Phase: What It Is and How to Avoid Waste
Frequently Asked Questions

Section 01

The 4 Google Ads Smart Bidding Strategies Explained

Smart Bidding is Google's machine-learning-powered bid automation. It uses auction-time signals — device, location, time, query, audience, and hundreds more — to set the optimal bid for each individual auction. The question isn't whether to use Smart Bidding in 2026; almost every account should. The question is which strategy to use and how to configure it correctly.

Strategy 01

Maximise Conversions

Gets you the most conversions within your budget. No target — Google spends your full daily budget to maximise conversion count. Use for: new campaigns without conversion history, situations where you need data fast. Risk: can produce inefficient CPAs if left unchecked.

Strategy 02

Maximise Conversion Value

Maximises the total revenue value of conversions rather than conversion count. Requires dynamic conversion values passed via enhanced conversions. Best for ecommerce with variable order values where a RM 500 order and a RM 50 order should be treated differently.

Strategy 03

Target CPA (tCPA)

Sets bids to achieve your target cost per conversion on average. Some conversions will cost more, some less — Google averages toward your target. Requires 30+ conversions/month to work effectively. Best for lead generation with relatively uniform lead values.

Strategy 04

Target ROAS (tROAS)

Sets bids to achieve your target return on ad spend. Requires dynamic conversion values and at least 50+ conversions/month. Best for ecommerce where maximising revenue relative to spend matters more than cost per transaction.

✦ The Progression Rule

New campaign → Maximise Conversions (data phase) → tCPA once 30+ conversions/month → tROAS once 50+ conversions/month with value data. Never skip stages. Jumping to tROAS on a new campaign with no conversion history is a guaranteed waste of budget.

Section 02

How to Set tCPA and tROAS Targets Correctly

The single biggest Smart Bidding mistake is setting targets too aggressively too early. A tCPA target of RM 50 on a campaign that historically converts at RM 180 CPA will starve the algorithm of conversions, perpetuate the learning phase, and likely reduce total conversions below what an unconstrained strategy would achieve.

The tCPA Target-Setting Sequence

Run Maximise Conversions for 30+ Conversions

Start without a target. Let Google optimise freely. Record your observed average CPA over the first 30–50 conversions. This is your baseline data-driven CPA — the realistic starting point for your first tCPA target.

Set Initial tCPA at 120% of Observed CPA

If your observed average CPA is RM 160, set your initial tCPA at RM 192 (120% × RM 160). This gives Smart Bidding a target it can realistically meet, which prevents immediate learning phase re-entry and allows the algorithm to maintain conversion volume while beginning to optimise.

Reduce Target by ≤20% Every 2 Weeks

Stepwise reduction: RM 192 → RM 154 → RM 130 → RM 110. Each step takes 2 weeks minimum to allow the learning period to complete. Monitor conversion volume at each step — if conversions drop by more than 30%, the step was too aggressive. Ease back 10% and wait.

Establish Your Floor: Minimum Conversion Volume Rule

Set a personal rule: never accept a tCPA target that results in fewer than 30 conversions/month. Below this threshold, Smart Bidding can no longer optimise effectively. If your ideal CPA requires fewer than 30 conversions at your budget, the business problem is budget — not bidding.

Phase	Strategy	When to Move On
Phase 1: Data Collection	Maximise Conversions (no target)	After 30–50 conversions
Phase 2: Efficiency Target	tCPA at 120% of observed CPA	After 2 weeks, stable CPA trend
Phase 3: Optimisation	Reduce tCPA by 10–20% every 2 weeks	Until target CPA is reached
Phase 4: Value Optimisation	Migrate to tROAS if values available	When 50+ conversions with values

Section 03

The Learning Phase: What It Is and How to Avoid Waste

Every time you change a bid strategy, target, or significant campaign setting, Google's Smart Bidding enters a learning phase. During this period, the algorithm is recalibrating — performance is unstable, CPAs often spike, and the data from this period should not be used for decision-making. Understanding the learning phase is the difference between managing Google Ads effectively and constantly chasing phantom performance swings.

⚠ What Triggers a Learning Phase Reset

Any of these actions resets the learning period: changing bid strategy type, adjusting tCPA/tROAS target by more than 20%, significant budget changes (over 30%), adding or removing many keywords, changing landing pages, major creative changes in PMax asset groups. Each reset costs 1–3 weeks of optimised performance. Every unnecessary change has a compounding cost.

Learning Phase Best Practices

Make all planned campaign changes at the same time — one learning phase is better than three sequential ones
Never evaluate performance during the learning phase — wait until "Learning" status clears in the campaign status column
Increase budget, not targets, when you want more conversion volume — budget increases cause smaller learning phase disruptions than target changes
Plan major changes 3–4 weeks before key sales periods so the learning phase completes before Hari Raya or 11.11
If a campaign stays in "Learning (Limited)" for more than 4 weeks, the issue is insufficient conversion volume — diagnose and fix the conversion funnel, not the bid strategy

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FAQ

Frequently Asked Questions

What is the best Smart Bidding strategy in 2026?

The best strategy depends on your stage. New campaigns with insufficient conversion data should use Maximise Conversions to accumulate data quickly. Once you have 30–50 conversions/month, switch to tCPA (lead gen) or tROAS (ecommerce). Maximise Conversion Value suits ecommerce businesses with variable order values who want revenue optimisation over strict efficiency targets.

How long does Smart Bidding take to work?

Smart Bidding typically needs 6–8 weeks of data collection before reaching optimised performance. The learning phase (the first 50 conversions) usually takes 2–4 weeks. Full optimisation where the algorithm consistently meets your target happens 4–8 weeks after that. Total: plan for 8–12 weeks before making major changes.

When should I use tCPA vs tROAS?

Use tCPA for lead generation where each conversion has roughly equal value (form submissions, phone calls). Use tROAS for ecommerce where order values vary significantly and you want the algorithm to prioritise high-value transactions. tROAS requires passing actual transaction values via enhanced conversions.

Why does Smart Bidding overspend my budget?

Smart Bidding can overspend daily budget by up to 2x to capture conversion opportunities. This is by design — Google averages spend across the month. However, if monthly spend consistently exceeds your monthly budget target, your tCPA or tROAS targets may be set too loosely, or your budget is too restrictive relative to your conversion volume goals.

How do I fix a campaign stuck in learning mode?

Campaigns stay in learning mode when they have fewer than 50 conversions/month. Solutions: increase budget to drive more conversions, broaden targeting to increase auction participation, consolidate campaigns to pool conversion data, or switch to Maximise Conversions (no target) temporarily to accumulate data faster. Never make bid strategy changes during learning mode.

Smart BiddingStrategies 2026:The Expert Setup