v3.26.1
N-4
Apr. 27, 2026
USD ($)
Prospectus:  
Document Type N-4
Entity Registrant Name Jackson National Separate Account - I
Entity Central Index Key 0000927730
Entity Investment Company Type N-4
Document Period End Date Aug. 13, 2026
Amendment Flag false
C000190624 [Member]  
Item 3. Key Information [Line Items]  
Fees and Expenses [Text Block]
The current minimum and maximum annual fees (for a single optional benefit), as displayed in the “Ongoing Fees and Expenses (annual charges)” section of the table contained in the “IMPORTANT INFORMATION YOU SHOULD CONSIDER ABOUT THE CONTRACT” section of the prospectus are:

ANNUAL FEEMINIMUMMAXIMUM
3. Optional benefits available for an additional charge (for a single optional benefit, if elected)3
0.20%
2.00%

3.    The minimum fee reflects an annualized percentage of GMDB Benefit Base. The maximum fee reflects an annualized percentage of the GWB.
The current lowest and highest annual cost estimates, as displayed in the “Ongoing Fees and Expenses (annual charges)” section of the table contained in the “IMPORTANT INFORMATION YOU SHOULD CONSIDER ABOUT THE CONTRACT” section of the prospectus are:

LOWEST ANNUAL COST: $705
HIGHEST ANNUAL COST: $4,651
Assumes:
•Investment of $100,000
•5% annual appreciation
•Least expensive combination of Fund fees and expenses
•No add-on benefits
•No sales charges
•No additional purchase payments, transfers or withdrawals
Assumes:
•Investment of $100,000
•5% annual appreciation
•Most expensive combination of add-on benefits and Fund fees and expenses
•No sales charges
•No additional purchase payments, transfers or withdrawals
Ongoing Fees and Expenses [Table Text Block]
ANNUAL FEEMINIMUMMAXIMUM
3. Optional benefits available for an additional charge (for a single optional benefit, if elected)3
0.20%
2.00%

3.    The minimum fee reflects an annualized percentage of GMDB Benefit Base. The maximum fee reflects an annualized percentage of the GWB.
Optional Benefits Minimum [Percent] 0.20%
Optional Benefits Maximum [Percent] 2.00%
Optional Benefits Footnotes [Text Block] The minimum fee reflects an annualized percentage of GMDB Benefit Base. The maximum fee reflects an annualized percentage of the GWB.
Lowest and Highest Annual Cost [Table Text Block]
LOWEST ANNUAL COST: $705
HIGHEST ANNUAL COST: $4,651
Assumes:
•Investment of $100,000
•5% annual appreciation
•Least expensive combination of Fund fees and expenses
•No add-on benefits
•No sales charges
•No additional purchase payments, transfers or withdrawals
Assumes:
•Investment of $100,000
•5% annual appreciation
•Most expensive combination of add-on benefits and Fund fees and expenses
•No sales charges
•No additional purchase payments, transfers or withdrawals
Lowest Annual Cost [Dollars] $ 705
Highest Annual Cost [Dollars] $ 4,651
Lowest Annual Cost Footnotes [Text Block]
Assumes:
•Investment of $100,000
•5% annual appreciation
•Least expensive combination of Fund fees and expenses
•No add-on benefits
•No sales charges
•No additional purchase payments, transfers or withdrawals
Highest Annual Cost Footnotes [Text Block]
Assumes:
•Investment of $100,000
•5% annual appreciation
•Most expensive combination of add-on benefits and Fund fees and expenses
•No sales charges
•No additional purchase payments, transfers or withdrawals
Item 4. Fee Table [Line Items]  
Item 4. Fee Table [Text Block]
The current annual charges for the following add-on benefits, when elected at issue, are:

Add-on Benefit NameCurrent Annual ChargeCharge Basis
AutoGuard0.85%GWB
Flex GMWB (Single)
Plus: 1.70%
GWB
Core: 1.25%
Value: 0.30%
Flex GMWB (Joint)
Plus: 2.00%
GWB
Core: 1.55%
Value: 0.60%
Flex Net GMWB (Single)
Core: 1.40%
GWB
Value: 0.45%
Flex Net GMWB (Joint)
Core: 1.70%
GWB
Value: 0.75%
Flex Strategic Income GMWB (Single)1.75%GWB
Flex Strategic Income GMWB (Joint)1.85%GWB
MarketGuard Stretch1.10%GMWB Charge Base
Return of Premium GMDB0.20%GMDB Benefit Base
Roll-up GMDB1.15%GMDB Benefit Base
Highest Quarterly Anniversary Value GMDB0.50%GMDB Benefit Base
Combination Roll-up and Highest Quarterly Anniversary Value GMDB1.25%GMDB Benefit Base
Flex DB*
With Flex Value: 1.00%
GMWB Death Benefit
With Flex Core: 1.00%
* Flex DB is only available with elections of the Flex GMWB (Single) Value or Core benefit options.
Annual Contract Expenses [Table Text Block]
Add-on Benefit NameCurrent Annual ChargeCharge Basis
AutoGuard0.85%GWB
Flex GMWB (Single)
Plus: 1.70%
GWB
Core: 1.25%
Value: 0.30%
Flex GMWB (Joint)
Plus: 2.00%
GWB
Core: 1.55%
Value: 0.60%
Flex Net GMWB (Single)
Core: 1.40%
GWB
Value: 0.45%
Flex Net GMWB (Joint)
Core: 1.70%
GWB
Value: 0.75%
Flex Strategic Income GMWB (Single)1.75%GWB
Flex Strategic Income GMWB (Joint)1.85%GWB
MarketGuard Stretch1.10%GMWB Charge Base
Return of Premium GMDB0.20%GMDB Benefit Base
Roll-up GMDB1.15%GMDB Benefit Base
Highest Quarterly Anniversary Value GMDB0.50%GMDB Benefit Base
Combination Roll-up and Highest Quarterly Anniversary Value GMDB1.25%GMDB Benefit Base
Flex DB*
With Flex Value: 1.00%
GMWB Death Benefit
With Flex Core: 1.00%
* Flex DB is only available with elections of the Flex GMWB (Single) Value or Core benefit options.
Item 10. Benefits Available [Line Items]  
Benefits Available (N-4) [Text Block]
The current rates for benefit options available with the Flex GMWB (Single) and (Joint) and Flex Net (Single) and (Joint) add-on benefits, when elected at issue, are:

Flex GMWB (Single)
Benefit OptionValueCorePlus
Bonus5%6%7%
Step-UpAnnual Contract ValueAnnual Contract ValueQuarterly Contract Value
GWB Adjustment105%105%
200%
GAWA PercentagesAgesGAWA%AgesGAWA %AgesGAWA%
35-59
3.00%
35-59
4.00%
35-59
4.00%
60-64
3.00%
60-644.25%60-644.65%
65-69
4.00%
65-695.65%65-696.15%
70-74
4.15%
70-745.85%70-746.35%
75-80
4.25%
75-806.05%75-806.55%
81+
4.50%
81+6.30%81+6.80%
Flex GMWB (Joint)
Benefit OptionValueCorePlus
Bonus5%6%7%
Step-UpAnnual Contract ValueAnnual Contract ValueQuarterly Contract Value
GWB Adjustment105%105%
200%
GAWA PercentagesAgesGAWA%AgesGAWA %AgesGAWA%
35-592.75%35-593.75%35-593.75%
60-642.75%60-644.00%60-644.40%
65-694.00%65-695.30%65-695.75%
70-74
4.15%
70-745.50%70-745.95%
75-804.25%75-805.70%75-806.15%
81+4.50%81+5.95%81+6.40%
Flex Net GMWB (Single)
Benefit OptionValueCore
Bonus5%6%
Step-UpAnnual Contract ValueAnnual Contract Value
GWB Adjustment105%105%
GAWA PercentagesAgesGAWA%AgesGAWA %
35-59
3.00%
35-59
4.00%
60-64
3.00%
60-644.35%
65-69
4.00%
65-695.85%
70-74
4.15%
70-746.00%
75-80
4.25%
75-806.15%
81+
4.50%
81+6.45%
Flex Net GMWB (Joint)
Benefit OptionValueCore
Bonus5%6%
Step-UpAnnual Contract ValueAnnual Contract Value
GWB Adjustment105%105%
GAWA PercentagesAgesGAWA%AgesGAWA %
35-592.75%35-593.75%
60-642.75%60-644.20%
65-694.00%65-695.55%
70-74
4.15%
70-745.70%
75-804.25%75-805.85%
81+4.50%81+6.15%

The current rates for the Flex Strategic Income GMWB (Single) and (Joint) add-on benefits, when elected at issue, are:

Flex Strategic Income GMWB (Single)
Bonus5%
GAWA PercentagesAgesAccelerated GAWA%Standard GAWA%
35-59
5.35%
3.00%
60-64
5.60%
3.00%
65-69
7.00%
4.00%
70-74
7.25%
4.00%
75-80
7.35%
4.00%
81+
7.60%
4.00%
Flex Strategic Income GMWB (Joint)
Bonus5%
GAWA PercentagesAgesAccelerated GAWA%Standard GAWA%
35-595.00%2.75%
60-645.00%2.75%
65-696.25%4.00%
70-74
6.40%
4.00%
75-806.50%
4.00%
81+6.75%
4.00%

The current rate for the AutoGuard add-on benefit, when elected at issue, is:

Add-on Benefit NameGAWA Percentage
AutoGuard6.00%

The current rates for the MarketGuard Stretch add-on benefit, when elected at issue, are:

Add-on Benefit NameAgesGAWA Percentage
MarketGuard Stretch0-544.50%
55-595.00%
60+5.50%
The current rate for the GMWB Death Benefit step-up percentage, when elected at issue, is:

Add-on Benefit Name
Step-Up Percentage
Flex DB*
100.00%
* Flex DB is only available with elections of the Flex GMWB (Single) Value or Core benefit options.
The current rates for the Roll-up GMDB and Combination Roll-up and Highest Quarterly Anniversary Value GMDB add-on benefits, when elected at issue, are:
Add-on Benefit NameRoll-up Percentage
Age 69 or youngerAge 70 or older
Roll-up GMDB6.00%5.00%
Combination Roll-up and Highest Quarterly Anniversary Value GMDB6.00%5.00%
C000190624 [Member] | AutoGuard [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 0.85%
Item 10. Benefits Available [Line Items]  
Name of Benefit [Text Block] AutoGuard
Optional Benefit Expense (of Other Amount), Current [Percent] 0.85%
Benefits Description [Table Text Block]
Add-on Benefit NameGAWA Percentage
AutoGuard6.00%
Name of Benefit [Text Block] AutoGuard
C000190624 [Member] | Flex GMWB (Single) [Member]  
Item 10. Benefits Available [Line Items]  
Name of Benefit [Text Block] Flex GMWB (Single)
Benefits Description [Table Text Block]
Flex GMWB (Single)
Benefit OptionValueCorePlus
Bonus5%6%7%
Step-UpAnnual Contract ValueAnnual Contract ValueQuarterly Contract Value
GWB Adjustment105%105%
200%
GAWA PercentagesAgesGAWA%AgesGAWA %AgesGAWA%
35-59
3.00%
35-59
4.00%
35-59
4.00%
60-64
3.00%
60-644.25%60-644.65%
65-69
4.00%
65-695.65%65-696.15%
70-74
4.15%
70-745.85%70-746.35%
75-80
4.25%
75-806.05%75-806.55%
81+
4.50%
81+6.30%81+6.80%
Name of Benefit [Text Block] Flex GMWB (Single)
C000190624 [Member] | Flex GMWB (Single) - Plus [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 1.70%
Item 10. Benefits Available [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 1.70%
C000190624 [Member] | Flex GMWB (Single) - Core [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 1.25%
Item 10. Benefits Available [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 1.25%
C000190624 [Member] | Flex GMWB (Single) - Value [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 0.30%
Item 10. Benefits Available [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 0.30%
C000190624 [Member] | Flex GMWB (Joint) [Member]  
Item 10. Benefits Available [Line Items]  
Name of Benefit [Text Block] Flex GMWB (Joint)
Benefits Description [Table Text Block]
Flex GMWB (Joint)
Benefit OptionValueCorePlus
Bonus5%6%7%
Step-UpAnnual Contract ValueAnnual Contract ValueQuarterly Contract Value
GWB Adjustment105%105%
200%
GAWA PercentagesAgesGAWA%AgesGAWA %AgesGAWA%
35-592.75%35-593.75%35-593.75%
60-642.75%60-644.00%60-644.40%
65-694.00%65-695.30%65-695.75%
70-74
4.15%
70-745.50%70-745.95%
75-804.25%75-805.70%75-806.15%
81+4.50%81+5.95%81+6.40%
Name of Benefit [Text Block] Flex GMWB (Joint)
C000190624 [Member] | Flex GMWB (Joint) - Plus [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 2.00%
Item 10. Benefits Available [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 2.00%
C000190624 [Member] | Flex GMWB (Joint) - Core [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 1.55%
Item 10. Benefits Available [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 1.55%
C000190624 [Member] | Flex GMWB (Joint) - Value [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 0.60%
Item 10. Benefits Available [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 0.60%
C000190624 [Member] | Flex Net GMWB (Single) [Member]  
Item 10. Benefits Available [Line Items]  
Name of Benefit [Text Block] Flex Net GMWB (Single)
Benefits Description [Table Text Block]
Flex Net GMWB (Single)
Benefit OptionValueCore
Bonus5%6%
Step-UpAnnual Contract ValueAnnual Contract Value
GWB Adjustment105%105%
GAWA PercentagesAgesGAWA%AgesGAWA %
35-59
3.00%
35-59
4.00%
60-64
3.00%
60-644.35%
65-69
4.00%
65-695.85%
70-74
4.15%
70-746.00%
75-80
4.25%
75-806.15%
81+
4.50%
81+6.45%
Name of Benefit [Text Block] Flex Net GMWB (Single)
C000190624 [Member] | Flex Net GMWB (Single) - Core [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 1.40%
Item 10. Benefits Available [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 1.40%
C000190624 [Member] | Flex Net GMWB (Single) - Value [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 0.45%
Item 10. Benefits Available [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 0.45%
C000190624 [Member] | Flex Net GMWB (Joint) [Member]  
Item 10. Benefits Available [Line Items]  
Name of Benefit [Text Block] Flex Net GMWB (Joint)
Benefits Description [Table Text Block]
Flex Net GMWB (Joint)
Benefit OptionValueCore
Bonus5%6%
Step-UpAnnual Contract ValueAnnual Contract Value
GWB Adjustment105%105%
GAWA PercentagesAgesGAWA%AgesGAWA %
35-592.75%35-593.75%
60-642.75%60-644.20%
65-694.00%65-695.55%
70-74
4.15%
70-745.70%
75-804.25%75-805.85%
81+4.50%81+6.15%
Name of Benefit [Text Block] Flex Net GMWB (Joint)
C000190624 [Member] | Flex Net GMWB (Joint) - Core [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 1.70%
Item 10. Benefits Available [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 1.70%
C000190624 [Member] | Flex Net GMWB (Joint) - Value [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 0.75%
Item 10. Benefits Available [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 0.75%
C000190624 [Member] | Flex Strategic Income GMWB (Single) [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 1.75%
Item 10. Benefits Available [Line Items]  
Name of Benefit [Text Block] Flex Strategic Income GMWB (Single)
Optional Benefit Expense (of Other Amount), Current [Percent] 1.75%
Benefits Description [Table Text Block]
Flex Strategic Income GMWB (Single)
Bonus5%
GAWA PercentagesAgesAccelerated GAWA%Standard GAWA%
35-59
5.35%
3.00%
60-64
5.60%
3.00%
65-69
7.00%
4.00%
70-74
7.25%
4.00%
75-80
7.35%
4.00%
81+
7.60%
4.00%
Name of Benefit [Text Block] Flex Strategic Income GMWB (Single)
C000190624 [Member] | Flex Strategic Income GMWB (Joint) [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 1.85%
Item 10. Benefits Available [Line Items]  
Name of Benefit [Text Block] Flex Strategic Income GMWB (Joint)
Optional Benefit Expense (of Other Amount), Current [Percent] 1.85%
Benefits Description [Table Text Block]
Flex Strategic Income GMWB (Joint)
Bonus5%
GAWA PercentagesAgesAccelerated GAWA%Standard GAWA%
35-595.00%2.75%
60-645.00%2.75%
65-696.25%4.00%
70-74
6.40%
4.00%
75-806.50%
4.00%
81+6.75%
4.00%
Name of Benefit [Text Block] Flex Strategic Income GMWB (Joint)
C000190624 [Member] | MarketGuard Stretch [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Other Amount), Current [Percent] 1.10%
Item 10. Benefits Available [Line Items]  
Name of Benefit [Text Block] MarketGuard Stretch
Optional Benefit Expense (of Other Amount), Current [Percent] 1.10%
Benefits Description [Table Text Block]
Add-on Benefit NameAgesGAWA Percentage
MarketGuard Stretch0-544.50%
55-595.00%
60+5.50%
Name of Benefit [Text Block] MarketGuard Stretch
C000190624 [Member] | Return of Premium GMDB [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Benefit Base), Current [Percent] 0.20%
Item 10. Benefits Available [Line Items]  
Name of Benefit [Text Block] Return of Premium GMDB
Optional Benefit Expense (of Benefit Base), Current [Percent] 0.20%
Name of Benefit [Text Block] Return of Premium GMDB
C000190624 [Member] | Roll-up GMDB [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Benefit Base), Current [Percent] 1.15%
Item 10. Benefits Available [Line Items]  
Name of Benefit [Text Block] Roll-up GMDB
Optional Benefit Expense (of Benefit Base), Current [Percent] 1.15%
Benefits Description [Table Text Block]
Add-on Benefit NameRoll-up Percentage
Age 69 or youngerAge 70 or older
Roll-up GMDB6.00%5.00%
Combination Roll-up and Highest Quarterly Anniversary Value GMDB6.00%5.00%
Name of Benefit [Text Block] Roll-up GMDB
C000190624 [Member] | Highest Quarterly Anniversary Value GMDB [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Benefit Base), Current [Percent] 0.50%
Item 10. Benefits Available [Line Items]  
Name of Benefit [Text Block] Highest Quarterly Anniversary Value GMDB
Optional Benefit Expense (of Benefit Base), Current [Percent] 0.50%
Name of Benefit [Text Block] Highest Quarterly Anniversary Value GMDB
C000190624 [Member] | Combination Roll-up and Highest Quarterly Anniversary Value GMDB [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Benefit Base), Current [Percent] 1.25%
Item 10. Benefits Available [Line Items]  
Name of Benefit [Text Block] Combination Roll-up and Highest Quarterly Anniversary Value GMDB
Optional Benefit Expense (of Benefit Base), Current [Percent] 1.25%
Benefits Description [Table Text Block]
Add-on Benefit NameRoll-up Percentage
Age 69 or youngerAge 70 or older
Roll-up GMDB6.00%5.00%
Combination Roll-up and Highest Quarterly Anniversary Value GMDB6.00%5.00%
Name of Benefit [Text Block] Combination Roll-up and Highest Quarterly Anniversary Value GMDB
C000190624 [Member] | Flex DB [Member]  
Item 10. Benefits Available [Line Items]  
Name of Benefit [Text Block] Flex DB*
Benefits Description [Table Text Block]
Add-on Benefit Name
Step-Up Percentage
Flex DB*
100.00%
* Flex DB is only available with elections of the Flex GMWB (Single) Value or Core benefit options.
Name of Benefit [Text Block] Flex DB*
C000190624 [Member] | Flex DB - Value [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Benefit Base), Current [Percent] 1.00%
Item 10. Benefits Available [Line Items]  
Optional Benefit Expense (of Benefit Base), Current [Percent] 1.00%
C000190624 [Member] | Flex DB - Core [Member]  
Item 4. Fee Table [Line Items]  
Optional Benefit Expense (of Benefit Base), Current [Percent] 1.00%
Item 10. Benefits Available [Line Items]  
Optional Benefit Expense (of Benefit Base), Current [Percent] 1.00%