The checkout is the revenue-critical moment of your online store — and simultaneously the place where most stores lose the most money. Not on the homepage. Not on the product page. But exactly where the purchase decision had already been made.
70.19% of all checkout starts end without a purchase. That’s not industry hearsay — it’s the result of years of checkout usability research by the Baymard Institute, the largest independent UX research organisation for e-commerce. It means: of 10 customers who proceed to checkout with intent to buy, 7 leave the store without paying.
For an online store doing €5 million in annual revenue, that could easily mean €3–5 million in potential incremental revenue sitting dormant in the checkout flow. Not because of poor products. Not because of high prices. But because of fixable friction points.
Baymard quantifies the improvement potential at up to 35.26% conversion rate increase through checkout UX optimisations alone. In this guide, you’ll learn which levers deliver the highest impact — and how to systematically audit and improve your checkout.
Your Checkout Is Losing Revenue Every Day — Here’s How Much
Before diving into optimisation tactics, it’s worth an honest assessment: how much revenue does your store lose each month through checkout abandonment?
The calculator below answers exactly that. Enter your current metrics — find the baseline in Google Analytics under “Funnel Exploration” or your store backend.
A concrete example: a store with 3,000 monthly checkout starts, an abandonment rate of 70%, and an AOV of €85 loses €178,500 per month — over €2.1 million per year. Even reducing the abandonment rate to 60% would unlock €25,500 in additional monthly revenue.
Why 7 Out of 10 Customers Walk Away Right Before Buying
The Baymard Institute has analysed over 41,000 checkout performance scores. The result is striking: 64% of leading US and European e-commerce sites have “mediocre” or worse checkout UX. Only 2% are rated “good.” No site is rated “perfect,” and 15% of sites have checkouts rated “poor” or “very poor.”
The most common reasons customers abandon checkout:
| Abandonment Reason | Share of Affected Customers | Solution Lever |
|---|---|---|
| Unexpected shipping or additional costs | 48% | Transparent pricing, shipping cost calculator |
| Forced account creation | 26% | Enable guest checkout |
| Too long or complex checkout process | 22% | Reduce steps, one-page checkout |
| Lack of trust in payment security | 17% | Trust signals, SSL badges, recognised payment methods |
| Website errors or crashes | 13% | Tech monitoring, performance optimisation |
| No suitable payment method available | 12% | Payment mix: PayPal + invoice + BNPL |
| Credit card declined or errors | 9% | Clear error messages, alternative payment options |
The 8 Levers That Turn Your Checkout Into a Revenue Engine
1. Stop Forcing Account Creation — It’s Your Biggest Single Lever
Don’t force account creation — this is the single most important lever in checkout. 26% of all checkout abandonment happens at this exact point. Customers don’t want to create an account with a new store before they’re sure the relationship will last.
The solution is simple: make guest checkout the primary option. The customer account — with its real benefits for repeat buyers — can be offered on the order confirmation page, once trust has already been established.
An important nuance: research shows that 60% of mobile buyers couldn’t find the guest checkout option even when it existed. Placement and visibility are critical.
2. PayPal, BNPL, Wallets: Match What Your Customers Actually Expect
Missing payment methods account for 12% of all checkout abandonment. For modern e-commerce, the minimum viable payment stack includes: primary digital wallet (PayPal or equivalent), buy-now-pay-later option (Klarna, Afterpay, etc.), card payments (Visa/Mastercard), and mobile wallets (Apple Pay, Google Pay).
BNPL deserves special attention: the global average BNPL market share is just 5%, but in Germany it’s already 20% — four times the global average. Markets across Europe and the US are following the same trajectory. Stores without a BNPL option are actively losing sales on higher-value baskets.
3. Fewer Fields, More Sales — The Logic Is That Simple
The average e-commerce checkout page contains 11.3 form fields and 5.1 steps. The Baymard Institute recommends an optimal range of 12–14 fields — though most stores can reduce this to 8–10 without any data loss.
Concrete actions:
- Combine first and last name into a single field
- Integrate address autocomplete via Google Places API (demonstrably saves 20% time, reduces typos on mobile)
- Mark optional fields as optional — or remove them entirely
- Hide business/company fields behind a toggle (irrelevant for B2C)
- Real-time validation: show errors immediately, not after submission
4. 85% Mobile Abandonment — Because Your Checkout Wasn’t Built for the Phone
Mobile devices generate 68% of total e-commerce traffic. Yet the mobile checkout abandonment rate sits at 85.65% — significantly above the desktop average.
The cause: most checkouts were designed for desktop and merely made responsive — that’s a different thing entirely. Mobile-first means:
- Large touch targets (minimum 44×44 px)
- Auto-fill and appropriate keyboard types (numpad for phone numbers, email keyboard for email fields)
- No horizontal scrolling
- One-tap express checkout (Apple Pay, Google Pay) as primary CTA on mobile
Desktop users spend an average of 5:16 minutes in checkout, mobile users only 2:49 minutes. Every second of friction counts twice.
5. Trust Is Decided in Seconds — And Only in the Right Place
17% of all checkout abandonment occurs due to insufficient trust in payment security. Simultaneously, studies show 61% of buyers have abandoned at least one purchase because no visible trust badges were present.
Trust signals must be contextually placed:
- SSL certificate and HTTPS — always present
- Quality seals (Trusted Shops, BBB, equivalent in your market) next to the order button
- Recognised payment logos (Visa, Mastercard, PayPal, Klarna) within the payment selection area
- Clear returns and refund information before the final purchase button
Important: trust badges buried deep in the footer show no measurable conversion effect. Placement directly at the decision point is what matters.
6. Hidden Costs Are the #1 Abandonment Reason — Show Everything Early
The leading abandonment driver: 48% of abandoners leave checkout due to unexpected costs. Shipping costs that only appear on step 3. Processing fees mentioned nowhere before. VAT notices that suddenly make the price 20% higher.
The solution is almost trivially simple — yet ignored by the majority of stores: show all costs as early as possible. Ideally on the product page, or at the very latest in the cart — not in the checkout.
Stores that communicate shipping costs and total price early reduce the most common single abandonment driver by more than half.
7. Every Second of Load Time Costs You 7% Conversion Rate
Every second of loading time in checkout costs 7% conversion rate. That sounds like a small number — but it means a checkout loading in 4 seconds instead of 1 second loses potentially 21% of conversion rate from waiting time alone.
Target: under 2 seconds for full checkout page load. Tools like Google PageSpeed Insights or WebPageTest will show you where you stand.
8. Show Customers Where They Stand — The Underrated Power of Orientation
Customers want to know where they are in the process — and how much longer it will take. A clear progress bar (e.g., “Step 2 of 3”) measurably reduces uncertainty and abandonment. Each completed step is perceived as a small win that motivates continued progress.
What Does Optimisation Actually Deliver? Calculate Your Potential
Now it gets concrete: what is the realistic revenue effect of improving your checkout completion rate?
A concrete example: A store with 50,000 monthly visitors, an add-to-cart rate of 8%, a current checkout completion rate of 30%, and an AOV of €85 currently achieves 1,020 orders per month. Improving the completion rate to 42% — realistic through the combined measures in this guide — means 1,428 orders: 408 additional orders × €85 = €34,680 in additional monthly revenue — without spending a single euro more on traffic.
How Good Is Your Checkout, Really? The Honest Benchmark Table
| Metric | Below Average | Benchmark (Avg.) | Top 10% | Target |
|---|---|---|---|---|
| Checkout abandonment rate | < 55% | 70% | 25% | < 60% |
| Checkout completion rate | 20% | 30–35% | 70–75% | > 45% |
| Checkout steps | 1–2 | 5.1 | 2–3 | ≤ 3 |
| Form fields | 6–8 | 11.3 | 8–10 | ≤ 12 |
| Checkout page load time | < 1s | 3–4s | < 1.5s | < 2s |
| Mobile abandonment rate | < 70% | 85.65% | < 65% | < 75% |
| Payment methods (count) | 3–4 | 4–6 | 6–8 | ≥ 5 relevant |
Stop Guessing, Start Testing: The Checkout Optimisation Framework
Checkout optimisation is not a one-time project — it’s a continuous improvement process. This framework helps you test systematically rather than guess:
Step 1: Establish your data baseline Before changing anything: analyse your checkout funnel in Google Analytics (Funnel Exploration) or GA4. Identify the step with the highest drop-off.
Step 2: Prioritise hypotheses Not all tests are equally valuable. Prioritise using the ICE framework:
- Impact: How large is the potential effect?
- Confidence: How confident are we it will work?
- Ease: How easy is implementation?
Step 3: Set up statistically significant tests For meaningful results, you need statistically significant sample sizes. Rule of thumb: at least 1,000 conversions per variant — or use a significance calculator (e.g. from Optimizely or VWO).
| Test Idea | Hypothesis | Priority (ICE) | Expected Effect |
|---|---|---|---|
| Guest checkout as primary option | Less friction = more completions | High (8/10) | +5–10% CR |
| Add invoice/buy-now-pay-later | Cover payment preferences = fewer abandons | High (9/10) | +3–8% CR |
| Address autocomplete on mobile | Less typing = fewer abandons | Medium (7/10) | +2–5% CR |
| Show shipping costs earlier | No surprises = fewer abandons | High (8/10) | +4–8% CR |
| Trust badge next to buy button | More trust = more completions | Medium (6/10) | +1–3% CR |
| Express checkout (Apple/Google Pay) as primary CTA on mobile | Fewer steps = more mobile completions | High (8/10) | +5–12% mobile CR |
| Add progress indicator | Orientation reduces uncertainty | Low (5/10) | +1–2% CR |
| Real-time form validation | Less frustration = fewer abandons | Medium (7/10) | +2–4% CR |
The 16-Point Checkout Audit: Find Your Weak Spots Right Now
Use this checklist to systematically evaluate your current checkout. Every unfulfilled point is an optimisation opportunity.
Accessibility & Entry
- Guest checkout is available and prominently placed
- Guest checkout clearly visible on mobile (not hidden)
- Social login optionally available (Google, Apple)
Form & UX
- Maximum field count: ≤ 12 required fields
- Address autocomplete (Google Places or equivalent) integrated
- Real-time validation — errors shown immediately
- Appropriate keyboard types on mobile (numpad, email)
- Error messages are clear and solution-oriented
Payment Methods
- PayPal available (including express checkout)
- Invoice or equivalent pay-later option available
- Klarna or another BNPL option available
- Apple Pay / Google Pay available on mobile
Transparency & Trust
- All costs (shipping, tax, fees) visible in the cart at latest
- Quality seals / trust badges placed directly next to the order button
- Returns and refund policy linked within the checkout
- Progress indicator present for multi-step checkouts
What is a good checkout completion rate?
A good checkout completion rate is between 45–55%. Top performers on Shopify reach 70–75%. The global average is approximately 30–35%. If your rate is below 25%, you have urgent action points — check first for forced account creation, payment method coverage, and price transparency.
One-page checkout vs multi-step — which is better?
It depends. A one-page checkout (everything on a single page) can be very effective but is often confusing on mobile. A multi-step checkout with a clear progress indicator and few steps (2–3) can perform equally well or better. More important than the format: fewer steps, minimal fields, clear structure. Test both variants with A/B tests for your specific audience.
How do I correctly measure my checkout abandonment rate?
In Google Analytics 4, use Funnel Exploration (Explorations → Funnel exploration). Define the steps: product page → cart → checkout start → order confirmation. The drop-off rate between checkout start and order confirmation is your checkout abandonment rate. Alternatively: (1 - Orders / Checkout Starts) × 100. Ensure the checkout-start event is correctly tracked — this is a common implementation error.
How many payment methods should I offer in checkout?
For most markets, 5–7 relevant payment methods is ideal: a primary digital wallet (PayPal or equivalent), buy-now-pay-later (Klarna, Afterpay, etc.), credit card (Visa/Mastercard), bank transfer/SEPA, and mobile wallets (Apple Pay, Google Pay). Important: more isn’t always better. Hick’s Law states that too many options lead to decision paralysis. Show the 4–5 most relevant methods prominently — additional options can be available in an expandable section.
What are the most important trust signals in checkout?
The most effective trust signals in checkout are: (1) SSL/HTTPS browser indicator — must always be present, (2) payment partner logos (PayPal, Visa, etc.) in the payment selection — increases trust through association with known brands, (3) quality seals (Trusted Shops, BBB equivalent) directly next to the order button, (4) clear returns policy within the checkout view. Key: placement next to the purchase decision moment (order button) is critical — trust signals in the footer show almost no effect.
Is checkout optimisation worth investing in for smaller stores?
Absolutely — in fact, it’s often more impactful for smaller stores. The percentage improvement in conversion rate is the same regardless of store size, but the investment required is identical. A 5% improvement in checkout completion rate on a store doing €500,000/year and one doing €5M/year both require the same A/B test — but the absolute revenue impact scales proportionally. The measures with the highest ROI (guest checkout, payment methods, price transparency) are also among the lowest-effort changes available.
What's the difference between cart abandonment and checkout abandonment?
Both are drop-offs — but at different stages. Cart abandonment happens when a user adds products to their cart but never starts the checkout process. Checkout abandonment happens when the checkout has already been initiated — personal data is being entered — but the purchase is still not completed. The distinction matters for your optimisation strategy: cart abandonment is best addressed with price transparency, exit-intent popups, and retargeting ads. Checkout abandonment requires UX improvements, better payment coverage, and shorter forms. Measure both separately in your analytics for a full picture of where you’re losing customers.
When should I show shipping costs in my online store?
As early as possible — ideally on the product page itself. At the very latest, shipping costs must be fully visible before the customer enters checkout. Hidden costs that only appear on step 2 or 3 of checkout are the single most common abandonment trigger, accounting for 48% of drop-offs (Baymard Institute). Particularly effective: a dynamic threshold message like “Add £8 more for free delivery” — this demonstrably increases average order value while reducing abandonment simultaneously.
How long should a checkout process take to complete?
As a rule of thumb, a well-designed checkout should be completable in under 3 minutes — with a maximum of 3 steps and 8–12 required fields. Reality falls short: the average is 5.1 steps and 11.3 fields, which costs most users 4–6 minutes. On mobile, tolerance is even lower — mobile users abandon significantly more often when the process exceeds 3 minutes. The gold standard: checkout start to order confirmation in under 90 seconds — achievable with one-tap express checkout (Apple Pay, Google Pay, PayPal) as the primary option.
Do abandoned cart emails actually work for recovering lost checkouts?
Yes — and significantly so. Abandoned cart emails are among the highest-ROI automations in e-commerce, with average open rates of 40–50% and conversion rates of 5–10% of recipients. A proven three-email sequence: (1) after 1 hour — a friendly reminder with no discount, (2) after 24 hours — a note that stock availability isn’t guaranteed, (3) after 72 hours — optionally a discount or free shipping offer. Use discounts sparingly in the third email: if customers learn that abandoning always triggers a discount, you inadvertently train them to abandon on purpose.
How do I set up a checkout funnel in Google Analytics 4?
In GA4, go to Explorations → Funnel exploration. Define the steps as events: (1) view_item or begin_checkout as your entry point, (2) add_payment_info for the payment page, (3) add_shipping_info for the delivery step, (4) purchase as the conversion. Make sure all events are correctly implemented via Google Tag Manager or directly in your code — begin_checkout in particular is frequently misfired. The funnel report shows you exactly which step has the highest drop-off. For additional depth, pair this with Hotjar or Microsoft Clarity for heatmaps and session recordings inside your checkout flow.
Conclusion: Checkout Optimisation Is Not UX — It’s Financial Strategy
A poor checkout isn’t a comfort problem — it’s a revenue problem. Every abandonment rate above 70% means that at least as much revenue is being left in the checkout as is currently being captured. And the best part: this revenue is accessible without additional marketing spend.
The measures described in this guide aren’t rocket science. They’re based on decades of usability research and demonstrably work. The critical factor isn’t knowledge — it’s consistent execution and systematic testing.
Prioritise by impact:
- Enable guest checkout — immediately, no test required
- Complete your payment methods (digital wallet, BNPL, mobile wallets) — immediately
- Establish price transparency — show all costs early
- Audit your mobile checkout — Google PageSpeed + manual user testing
- Move trust signals next to the buy button — a small design update with measurable impact
Anyone who consistently implements these five measures will typically see 15–25% more checkout completions — without spending a cent more on traffic.
References
- Baymard Institute — “Checkout Usability Research”, 41,000+ Checkout Performance Scores, 2025. baymard.com/research/checkout-usability
- Baymard Institute — “Current State of Checkout UX”, 2025. baymard.com/blog/current-state-of-checkout-ux
- Dynamic Yield by Mastercard — “Cart Abandonment Rate Benchmarks”, 2025. marketing.dynamicyield.com/benchmarks
- Statista — “Biggest Online Payment Methods in Germany”, 2025. statista.com/statistics/817348
- Shopify — “Checkout Best Practices (2025)”. shopify.com/blog/checkout-process-optimization
- Salesforce — “Ecommerce Checkout: 10 Best Practices for 2025”. salesforce.com/commerce
- BigCommerce — “Checkout Optimization Best Practices for 2025”. bigcommerce.com
- Design Studio UI/UX — “15 Ecommerce Checkout & Cart UX Best Practices for 2026”. designstudiouiux.com
- Financial IT — “Checkout Optimisation in 2025: How to Build a High-Converting Payment Experience”. financialit.net
- Convertcart — “eCommerce Checkout UX: 13 Tips To Boost Conversions”. convertcart.com/blog/ecommerce-checkout-ux-design
