When does the new Amazon handling time requirement take effect?

June 29, 2026. From that date, every seller-fulfilled SKU that uses handling time must have an accurate SKU-level setting, either through Automated Handling Time or through manual SKU-specific configuration.

What happens if I do not update my handling time settings?

Amazon will assign an automated handling time based on each SKU's recent confirmed handling history. That can work for SKUs with consistent same-day shipping, but it can also set a promised delivery date that is tighter than your real capacity during peak season or supplier delays.

Which SKUs are excluded?

Per Amazon's notice, the requirement does not apply to custom, handmade, or Heavy and bulky less-than-truckload shipments.

Should I enable Automated Handling Time or set it manually?

Automated is the right call for high-velocity SKUs with stable same-day or next-day shipping history. Manual SKU-specific is safer for fragile, bundled, kitted, inspected, or third-party-warehoused SKUs where recent history may not reflect normal operations.

How does this interact with Seller Fulfilled Prime?

Amazon raised SFP delivery speed thresholds on May 25, 2026 with new national one-day and two-day coverage targets effective July 6. The handling-time rule lands six days earlier and is the upstream lever: tighter handling time means tighter promised delivery dates, which then have to clear the new SFP speed bar.

Operations

Amazon FBM SKU handling time required from June 29, 2026

Amazon is requiring accurate SKU-level handling time on every seller-fulfilled SKU starting June 29, 2026. FBM operators must enable Automated Handling Time or maintain manual SKU-specific settings, or Amazon will assign one based on recent confirmed history.

MaxCOO at Nova Analytics

May 30, 2026 · 6 min read · 1,258 words

Updated May 30, 2026

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What's happening

Amazon notified seller-fulfilled merchants this week that starting June 29, 2026, every seller-fulfilled SKU that needs handling time must carry an accurate SKU-level setting. Sellers can comply by enabling Automated Handling Time, or by maintaining manual SKU-specific handling time. Accounts that do neither will have an automated handling time assigned by Amazon based on each SKU's recent confirmed handling history (DAM Law Firm coverage).

Amazon's stated rationale is conversion: per the notice, each day of improvement in promised delivery time correlates with an average 5% lift in sales, and more than 87% of US seller-fulfilled orders today ship within one day. Custom, handmade, and Heavy and bulky less-than-truckload SKUs are explicitly excluded. The official mechanics — what Automated Handling Time uses as input, how exclusions are scoped, how to override at SKU level — live in Amazon's Manage your handling time help page. A separate logistics-side breakdown of the June 29 rollout, including the interaction with rising delivery-speed standards, is available from Forest Shipping's coverage of the June 29 handling time rules.

For FBM operators, the risk is not the conversion lift Amazon advertises. It is what happens when an automated handling time gets set against a recent confirmed history that does not reflect normal operations: tighter promised delivery dates, higher Late Shipment Rate exposure, more A-to-z claims, and account-health drift on the SKUs that need the most prep work.

Key facts at a glance

Effective date

June 29, 2026

SKU-level handling time required on every seller-fulfilled SKU that uses handling time

Compliance paths

Enable Automated Handling Time, or maintain manual SKU-specific handling time

Excluded

3 types

Custom, handmade, and Heavy and bulky LTL shipments

How we got here

Key Dates & Deadlines

Jan 26, 2026

FBM refund window extended

Amazon moves seller-fulfilled refund processing from 2 business days to 4 calendar days, giving FBM operators more inspection time before refund.

May 25, 2026

SFP speed thresholds tightened

Amazon raises minimum delivery-speed targets for Seller Fulfilled Prime, effective July 6, with a per-ZIP delivery promise tool.

May 29-30, 2026

Handling time notice surfaces

Seller-fulfilled merchants begin receiving Seller Central notices on the June 29 SKU-level handling time requirement.

June 29, 2026

Requirement takes effect

Seller-fulfilled SKUs that need handling time must have accurate SKU-level settings or Amazon assigns an automated value.

Automated vs manual: how to choose

Path	Best for	Watch out for
Automated Handling Time	High-velocity SKUs with stable same-day or next-day shipping history and consistent staffing.	Recent quiet months pulling the assigned handling time below what peak-season ops can sustain.
Manual SKU-specific	Fragile, bundled, kitted, inspected, supplier-confirmed, or third-party-warehoused SKUs.	Settings going stale; needs a quarterly audit cadence and a default closer to reality, not best case.
Do nothing	Not a real option after June 29.	Amazon assigns an automated handling time anyway, using a window the seller did not pick.

The strongest accounts will mix both paths: Automated Handling Time on the SKUs where shipping cadence is genuinely consistent, and manual SKU-specific settings on the long tail where prep complexity makes the recent-history assumption dangerous.

What FBM sellers should do before June 29

1
Pull every active seller-fulfilled SKU and flag the ones using account-level handling time
Anything still on the default catalog setting is the highest priority. These are the SKUs most likely to get an automated handling time that does not fit their prep profile.
2
Segment the catalog by prep profile
Group SKUs by what actually drives shipping time: same-day pick-and-pack, bundled or kitted, fragile or inspected, third-party-warehoused, supplier-confirmed, seasonal. Each segment gets a different handling time default.
3
Audit the last 90 days of confirmed handling times
If you plan to enable Automated Handling Time on a segment, look at p95 handling time, not the average. Amazon's automation will tighten the promise toward your recent best case, which is rarely your real capacity.
4
Re-rate margin on bulky-but-light and FBM-only SKUs
Tighter promised delivery dates push more SKUs toward expedited carrier services. Recalculate contribution margin in Profit & Loss so the new shipping mix is visible at SKU level, not buried in a monthly average.
5
Set a Late Shipment Rate alert from June 29
Watch LSR daily for the first 30 days after go-live in Day-to-Day Performance. Any drift above 4% is an early signal that an automated handling time was set too tight on a segment.

Where this fits in the 2026 FBM picture

Handling time does not move alone. Amazon has been tightening the seller-fulfilled operating contract all year, and the June 29 change stacks on top of policies that already reprice the cost of running FBM.

Amazon tightens SFP delivery speed rules July 6, 2026 - the parallel speed-bar increase for Seller Fulfilled Prime, including a per-ZIP delivery promise tool.
FBM refund window extended to 4 days - the policy change that gave FBM operators more inspection time before refund.
CSBA upgrades - the assisted-CX lever for FBM sellers who do not want to rebuild ops against the new bar.

How Nova helps

Nova is the operating system for Amazon brands. When a fulfillment policy changes, the brands that win are the ones that see Late Shipment Rate, refund leakage, and SKU-level margin shift the same day, not at month close.

Profit & Loss - reconciles 40+ Amazon fee types and refund deductions at SKU level so tighter handling-time promises do not quietly compress contribution margin on FBM SKUs.
Day-to-Day Performance - daily Late Shipment Rate, cancellation rate, and refund-rate trends so segment-level handling-time misses surface inside 24 hours, not at the next account-health hit.
Custom Breakdowns - split LSR, refund-rate, and margin by fulfillment channel, prep profile, and ZIP zone without exporting to a spreadsheet.
Seller Cockpit - 900+ metrics in one place, including LSR, on-time delivery rate, and account-health signal, refreshed hourly across 23 marketplaces.
For FBA and FBM sellers - how Nova helps mixed-fulfillment brands keep FBM and FBA operations on the same P&L.

Verified Sources

DAM Law Firm: Amazon Announces New Handling Time Requirements For Seller Fulfilled Products (May 2026)

All information verified from official Amazon sources and trusted industry analysts as of publication date.

About the Author

Max

COO at Nova Analytics

Max leads operations at Nova Analytics, helping Amazon sellers optimize their business performance through data-driven insights and strategic automation.

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What's happening

How we got here

Key Dates & Deadlines

Jan 26, 2026

FBM refund window extended

Amazon moves seller-fulfilled refund processing from 2 business days to 4 calendar days, giving FBM operators more inspection time before refund.

May 25, 2026

SFP speed thresholds tightened

Amazon raises minimum delivery-speed targets for Seller Fulfilled Prime, effective July 6, with a per-ZIP delivery promise tool.

May 29-30, 2026

Handling time notice surfaces

Seller-fulfilled merchants begin receiving Seller Central notices on the June 29 SKU-level handling time requirement.

June 29, 2026

Requirement takes effect

Seller-fulfilled SKUs that need handling time must have accurate SKU-level settings or Amazon assigns an automated value.

Automated vs manual: how to choose

Path	Best for	Watch out for
Automated Handling Time	High-velocity SKUs with stable same-day or next-day shipping history and consistent staffing.	Recent quiet months pulling the assigned handling time below what peak-season ops can sustain.
Manual SKU-specific	Fragile, bundled, kitted, inspected, supplier-confirmed, or third-party-warehoused SKUs.	Settings going stale; needs a quarterly audit cadence and a default closer to reality, not best case.
Do nothing	Not a real option after June 29.	Amazon assigns an automated handling time anyway, using a window the seller did not pick.

What FBM sellers should do before June 29

Pull every active seller-fulfilled SKU and flag the ones using account-level handling time

Anything still on the default catalog setting is the highest priority. These are the SKUs most likely to get an automated handling time that does not fit their prep profile.

Segment the catalog by prep profile

Group SKUs by what actually drives shipping time: same-day pick-and-pack, bundled or kitted, fragile or inspected, third-party-warehoused, supplier-confirmed, seasonal. Each segment gets a different handling time default.

Audit the last 90 days of confirmed handling times

If you plan to enable Automated Handling Time on a segment, look at p95 handling time, not the average. Amazon's automation will tighten the promise toward your recent best case, which is rarely your real capacity.

Re-rate margin on bulky-but-light and FBM-only SKUs

Tighter promised delivery dates push more SKUs toward expedited carrier services. Recalculate contribution margin in Profit & Loss so the new shipping mix is visible at SKU level, not buried in a monthly average.

Set a Late Shipment Rate alert from June 29

Watch LSR daily for the first 30 days after go-live in Day-to-Day Performance. Any drift above 4% is an early signal that an automated handling time was set too tight on a segment.

Where this fits in the 2026 FBM picture

Amazon tightens SFP delivery speed rules July 6, 2026 - the parallel speed-bar increase for Seller Fulfilled Prime, including a per-ZIP delivery promise tool.

FBM refund window extended to 4 days - the policy change that gave FBM operators more inspection time before refund.

CSBA upgrades - the assisted-CX lever for FBM sellers who do not want to rebuild ops against the new bar.

How Nova helps

Profit & Loss - reconciles 40+ Amazon fee types and refund deductions at SKU level so tighter handling-time promises do not quietly compress contribution margin on FBM SKUs.

Day-to-Day Performance - daily Late Shipment Rate, cancellation rate, and refund-rate trends so segment-level handling-time misses surface inside 24 hours, not at the next account-health hit.

Custom Breakdowns - split LSR, refund-rate, and margin by fulfillment channel, prep profile, and ZIP zone without exporting to a spreadsheet.

Seller Cockpit - 900+ metrics in one place, including LSR, on-time delivery rate, and account-health signal, refreshed hourly across 23 marketplaces.

For FBA and FBM sellers - how Nova helps mixed-fulfillment brands keep FBM and FBA operations on the same P&L.

Amazon FBM SKU handling time required from June 29, 2026

What's happening

Key facts at a glance

Effective date

Compliance paths

Excluded

How we got here

Key Dates & Deadlines

Automated vs manual: how to choose

What FBM sellers should do before June 29

Where this fits in the 2026 FBM picture

How Nova helps

Verified Sources

Max

See your Amazon business clearly.

What's happening

Key facts at a glance

Effective date

Compliance paths

Excluded

How we got here

Key Dates & Deadlines

Automated vs manual: how to choose

What FBM sellers should do before June 29

Where this fits in the 2026 FBM picture

How Nova helps

Frequently Asked Questions

When does the new Amazon handling time requirement take effect?

What happens if I do not update my handling time settings?

Which SKUs are excluded?

Should I enable Automated Handling Time or set it manually?

How does this interact with Seller Fulfilled Prime?

Frequently Asked Questions

When does the new Amazon handling time requirement take effect?

What happens if I do not update my handling time settings?

Which SKUs are excluded?

Should I enable Automated Handling Time or set it manually?

How does this interact with Seller Fulfilled Prime?

What's happening

Key facts at a glance

Effective date

Compliance paths

Excluded

How we got here

Key Dates & Deadlines

Automated vs manual: how to choose

What FBM sellers should do before June 29

Where this fits in the 2026 FBM picture

How Nova helps

Verified Sources

Max

Related guides

See your Amazon business clearly.

What's happening

Key facts at a glance

Effective date

Compliance paths

Excluded

How we got here

Key Dates & Deadlines

Automated vs manual: how to choose

What FBM sellers should do before June 29

Where this fits in the 2026 FBM picture

How Nova helps

Frequently Asked Questions

When does the new Amazon handling time requirement take effect?

What happens if I do not update my handling time settings?

Which SKUs are excluded?

Should I enable Automated Handling Time or set it manually?

How does this interact with Seller Fulfilled Prime?

Frequently Asked Questions

When does the new Amazon handling time requirement take effect?

What happens if I do not update my handling time settings?

Which SKUs are excluded?

Should I enable Automated Handling Time or set it manually?

How does this interact with Seller Fulfilled Prime?