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Homeโ€บBlogโ€บab testingโ€บCheckout A/B Testing Ideas: 25 Tests to Run

Checkout A/B Testing Ideas: 25 Tests to Run

SJSapna JoharHead of Growth & CRO, CustomFit.aiJanuary 15, 202511 min read
On this page
  1. The Checkout Abandonment Problem
  2. Account and Entry Tests (1โ€“5)
  3. Test 1: Guest Checkout Prominence
  4. Test 2: Phone Number vs. Email as Primary Contact
  5. Test 3: Social Login Options
  6. Test 4: OTP vs. Password for Returning Customers
  7. Test 5: Progress Indicator Style
  8. Form and Address Tests (6โ€“10)
  9. Test 6: Address Autocomplete vs. Manual Entry
  10. Test 7: Number of Form Fields
  11. Test 8: Address Landmark Field
  12. Test 9: Delivery Date Selection vs. Estimate Text
  13. Test 10: Save Address for Returning Customers
  14. Payment Method Tests (11โ€“17)
  15. Test 11: Payment Method Display Order
  16. Test 12: UPI QR Code Display
  17. Test 13: COD Fee Transparency Timing
  18. Test 14: EMI Option Inline vs. After Payment Selection
  19. Test 15: "Recommended" Payment Method Badge
  20. Test 16: Coupon Code Field โ€” Visible vs. Hidden
  21. Test 17: WhatsApp Order Confirmation Opt-In
  22. Trust and Reassurance Tests (18โ€“22)
  23. Test 18: Security Badge Near "Place Order" Button
  24. Test 19: "Why Buy From Us" Reassurance Block
  25. Test 20: Live Chat at Checkout
  26. Test 21: Return Policy Summary at Checkout
  27. Test 22: "Your Order is Protected" Badge
  28. Post-Purchase and Upsell Tests (23โ€“25)
  29. Test 23: Order Bump at Checkout
  30. Test 24: Post-Purchase Upsell Page
  31. Test 25: Loyalty/Referral Offer at Order Confirmation
  32. Priority Ranking for Checkout Tests
  33. Tips and Best Practices
  34. Key Takeaways
0%
Checkout A/B Testing Ideas: 25 Tests to Run

From the conversion glossary

Concepts referenced in this article, defined.

Definition
What Is Variant? Definition, Formula & Guide
Definition
What Is Lift? Definition, Formula & Guide
Definition
What Is Checkout Completion Rate? Definition & Guide
Definition
What Is Coupon? Definition & Guide
Definition
What Is Friction? Definition & Guide
โ† Back to Ab Testing guide
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Checkout abandonment costs Indian D2C brands tens of crores of rupees each year. On average, 70โ€“80% of customers who reach checkout do not complete the purchase. This is your highest-intent audience โ€” they've selected a product, built a cart, and started the checkout process. Losing them at this stage is the most expensive failure in ecommerce. These 25 checkout A/B testing ideas target every major point of friction from cart to order confirmation.

The Checkout Abandonment Problem

Customers abandon checkout for specific, fixable reasons:

  • Unexpected costs (shipping, fees) revealed late in the process
  • Forced account creation
  • Payment method not available
  • Complicated address form
  • Lack of trust signals at the payment stage
  • Slow page load

Split testing each of these friction points systematically โ€” not fixing them all at once โ€” lets you identify which specific issue is costing you the most conversions in your specific audience. Statistical significance ensures your fixes are real improvements, not lucky noise.

Account and Entry Tests (1โ€“5)

Test 1: Guest Checkout Prominence

Variant A: "Create Account" is the prominent option; "Continue as Guest" is secondary Variant B: "Continue as Guest" is the prominent option; "Create Account" is secondary

Forcing account creation before purchase is one of the most documented causes of checkout abandonment. Making guest checkout the primary option lifts checkout completion by 15โ€“25%.

Expected lift: 15โ€“25% checkout completion rate.

Test 2: Phone Number vs. Email as Primary Contact

Variant A: Email address as the required contact field Variant B: Phone number as the required contact field (with email optional)

For Indian D2C, phone number is more universally available and frequently checked than email, especially for Tier 2/3 city shoppers. Testing phone as primary reduces form abandonment for this segment.

Expected lift: 5โ€“10% checkout initiation for mobile-first shoppers.

Test 3: Social Login Options

Variant A: Standard email/phone sign-up Variant B: "Continue with Google | Continue with Facebook | Continue with Phone OTP"

One-click social login reduces the friction of account creation for customers who prefer it. Test the specific combination that matches your traffic source (Google for search traffic, Facebook for social traffic).

Expected lift: 8โ€“15% account creation rate with social login.

Test 4: OTP vs. Password for Returning Customers

Variant A: Password login for returning customers Variant B: OTP (SMS to phone) login for returning customers

OTP login eliminates "forgotten password" abandonment and is the preferred authentication method for Indian mobile shoppers. Kapiva uses OTP login natively.

Expected lift: 10โ€“18% returning customer login completion rate.

Test 5: Progress Indicator Style

Variant A: Step numbers (Step 1 of 3) Variant B: Visual progress bar with step names (Contact โ†’ Shipping โ†’ Payment) Variant C: No progress indicator

Visual progress bars with step names lift checkout completion by reducing the "how much longer is this?" anxiety. They also make each step feel achievable.

Expected lift: 5โ€“10% checkout completion rate.

Form and Address Tests (6โ€“10)

Test 6: Address Autocomplete vs. Manual Entry

Variant A: Manual address entry (street, city, state, pincode) Variant B: Pincode-first autocomplete that fills city and state automatically, then street address

Pincode-first forms are dramatically faster for Indian addresses and reduce input errors significantly. This is a low-effort, high-impact test.

Expected lift: 8โ€“15% checkout completion rate and 20โ€“30% reduction in address errors.

Test 7: Number of Form Fields

Variant A: Full address form (6+ fields) Variant B: Minimal form (Phone, Full Address, Pincode โ€” 3 fields)

Each additional required form field reduces checkout completion. Test the minimum number of fields needed for your logistics partner's requirements.

Expected lift: 5โ€“12% completion rate per unnecessary field removed.

Test 8: Address Landmark Field

For Indian D2C, adding an optional "Landmark" field (e.g., "Near Rajiv Gandhi circle") alongside the address reduces delivery failures in Tier 2/3 cities where pin code precision is lower.

This is a retention test more than a conversion test โ€” measure successful delivery rates as the primary metric.

Test 9: Delivery Date Selection vs. Estimate Text

Variant A: "Delivery in 5โ€“7 business days" Variant B: A date picker or specific date display ("Arrives by Friday, March 28")

Specific delivery dates reduce "when will it arrive?" anxiety. For time-sensitive purchases (gifting, upcoming occasion), a specific date significantly lifts checkout completion.

Expected lift: 6โ€“12% checkout completion for time-sensitive purchase segments.

Test 10: Save Address for Returning Customers

Variant A: Address re-entry required at each purchase Variant B: Saved address with one-click selection for returning customers

Eliminating address re-entry for returning customers reduces checkout time dramatically and lifts repeat purchase rate. Critical for subscription and replenishment categories.

Expected lift: 12โ€“20% checkout completion rate for returning customers.

Payment Method Tests (11โ€“17)

Test 11: Payment Method Display Order

Variant A: Credit/Debit Card โ†’ Net Banking โ†’ UPI โ†’ COD Variant B: UPI โ†’ Credit/Debit Card โ†’ COD โ†’ Net Banking

UPI is India's most-used payment method and has the highest checkout completion rate. Making it first reduces payment friction for the majority of Indian buyers.

Expected lift: 8โ€“15% checkout completion rate.

Test 12: UPI QR Code Display

Variant A: UPI ID entry with app selector Variant B: QR code prominently displayed alongside UPI ID entry

QR code display makes UPI payment faster for customers who prefer scanning over typing a UPI ID. Test for mobile vs. desktop separately (QR code is desktop-only relevant).

Test 13: COD Fee Transparency Timing

Variant A: COD fee (โ‚น50 handling charge) revealed at payment stage Variant B: COD fee displayed from cart stage onwards

Revealing fees late creates abandonment. Early transparency reduces perceived deception and lowers COD abandonment rates.

Expected lift: 5โ€“10% COD checkout completion with early disclosure.

Test 14: EMI Option Inline vs. After Payment Selection

Variant A: EMI option appears after customer selects credit card Variant B: EMI option displayed as a top-level payment method: "0% EMI โ€” โ‚นX/month"

Top-level EMI display increases EMI adoption by 20โ€“30% for high-ticket purchases because many customers don't reach the credit card subsection.

Test 15: "Recommended" Payment Method Badge

Variant A: Equal prominence for all payment methods Variant B: UPI marked as "Recommended โ€” Fastest Checkout" with a badge

Highlighting the recommended payment method (based on speed and reliability) reduces decision paralysis at the payment step and increases UPI adoption.

Expected lift: 5โ€“10% checkout completion rate; 15โ€“20% UPI adoption rate.

Test 16: Coupon Code Field โ€” Visible vs. Hidden

Variant A: Coupon code field always visible at checkout Variant B: Coupon code field hidden behind "Have a coupon? Click here" link

A visible empty coupon field causes customers without coupons to abandon checkout to search for one. Hiding it behind a link reduces this behaviour.

Expected lift: 5โ€“10% checkout completion for customers without coupons.

Test 17: WhatsApp Order Confirmation Opt-In

Variant A: Email order confirmation only Variant B: "Get order updates on WhatsApp" checkbox (pre-checked) at checkout

WhatsApp order confirmations have 5โ€“8x higher open rates than email in India. Customers who receive WhatsApp updates are 20โ€“30% more likely to repeat purchase because the post-purchase communication feels more personal.

Trust and Reassurance Tests (18โ€“22)

Test 18: Security Badge Near "Place Order" Button

Variant A: No security badges at checkout payment stage Variant B: "256-bit SSL | PCI DSS Compliant | Secured by Razorpay/Cashfree" badges directly below the "Place Order" button

Security badges at the payment stage reduce payment anxiety, especially for first-time buyers. Position them as close to the final action as possible.

Expected lift: 4โ€“9% checkout completion rate for first-time buyers.

Test 19: "Why Buy From Us" Reassurance Block

Variant A: No reassurance at checkout Variant B: A brief 3-point reassurance block on the order summary page: "Free returns | Genuine products | 14,000+ happy customers"

A checkout-stage reassurance block addresses the "last-minute doubt" that hits many shoppers at the payment step.

Expected lift: 4โ€“8% checkout completion rate.

Test 20: Live Chat at Checkout

Variant A: No chat support at checkout Variant B: "Need help? Chat with us before you order" option at checkout

A checkout chat option converts a small but valuable percentage of hesitant buyers who have a last-minute question. Particularly impactful for high-ticket purchases.

Expected lift: 3โ€“7% assisted conversion rate from chat-engaged checkout visitors.

Test 21: Return Policy Summary at Checkout

Variant A: No return policy mentioned at checkout Variant B: "Not happy? Free returns within 30 days" summary near the Place Order button

Last-minute display of return policy removes the "what if I don't like it?" fear at the critical purchase moment.

Expected lift: 4โ€“9% checkout completion rate.

Test 22: "Your Order is Protected" Badge

Variant A: Standard checkout without purchase protection messaging Variant B: "Your order is 100% protected. If anything goes wrong, we make it right." badge at payment stage

Purchase protection language taps into the loss aversion that makes customers hesitate at the final step.

Expected lift: 5โ€“10% checkout completion rate.

Post-Purchase and Upsell Tests (23โ€“25)

Test 23: Order Bump at Checkout

Variant A: No order bump at checkout Variant B: A single, relevant add-on product at โ‚น99โ€“โ‚น299 on the order review page: "Add [Complementary Product] for โ‚น149 โ€” most customers add this"

An order bump on the order review page (before final payment) converts at 10โ€“20% take-rate for well-chosen complementary products at low price points.

Expected lift: 10โ€“20% take-rate; 8โ€“15% AOV increase.

Test 24: Post-Purchase Upsell Page

Variant A: Thank you page with order confirmation only Variant B: Thank you page with "One last thing โ€” add [product] for โ‚นX at a special rate" before showing order confirmation

Post-purchase upsell pages (where the order is already placed but customer is offered an add-on before seeing their full confirmation) convert at 5โ€“12% take-rate with zero risk of cart abandonment.

Expected lift: 5โ€“12% take-rate; 5โ€“10% AOV increase on all orders.

Test 25: Loyalty/Referral Offer at Order Confirmation

Variant A: Thank you page with order summary only Variant B: Thank you page with "You've earned [X] reward points" + "Share with a friend โ€” you both get โ‚น150 off" referral CTA

A referral offer at the highest-satisfaction moment (immediately after a purchase decision) has a 3โ€“5x higher share rate than email-based referral requests.

Expected lift: 3โ€“5x referral share rate vs. email; measurable impact on new customer acquisition cost.

Priority Ranking for Checkout Tests

PriorityTestWhy
1Guest checkout prominenceHighest single-test impact
2Payment method order (UPI first)Aligns with India's payment behaviour
3Address autocomplete / pincode-firstReduces the biggest form friction
4Coupon field hidden by defaultReduces abandon-to-search behaviour
5Security badges near Place OrderDirectly addresses payment anxiety

Tips and Best Practices

Checkout tests have the highest ROI of any test location. Every visitor at checkout has already decided to buy โ€” they're the highest-value segment. Even a 2% checkout completion improvement on a โ‚น50 lakh monthly store is worth โ‚น1 lakh per month.

Test on mobile first. 65โ€“75% of Indian D2C checkout attempts happen on mobile. Desktop checkout is almost a separate product. Segment all checkout test results by device.

Measure statistical significance rigorously. Checkout tests can appear to show dramatic results in the first few days due to small sample sizes. Wait for full significance (95% confidence, correct sample size) before declaring a winner.

See also: cart page A/B testing ideas for pre-checkout optimisation and product page A/B testing ideas for the full funnel view.

Key Takeaways

  • Guest checkout as the primary option is the single most impactful checkout test โ€” it lifts completion by 15โ€“25%.
  • UPI first in payment method order aligns with India's dominant payment behaviour and reduces friction at the payment step.
  • Pincode-first address autocomplete is a low-effort, high-impact Indian-specific checkout improvement.
  • Security badges near the "Place Order" button directly address the payment anxiety that abandons 5โ€“10% of checkouts.
  • Order bumps and post-purchase upsell pages convert at 5โ€“20% take-rates with zero risk of primary purchase abandonment.