FreeByte

State pension gap calculator

Top-up needed beyond the state amount.

Built and reviewed by Dovanic, Founder and editor, FreeByteLast reviewed: 2026-08-18
$
$
4%

Private income needed

$29,000

Pot required

$290,000

With these inputs, private income needed comes to $29,000. Pot required works out to $290,000. The result assumes withdrawal rate stays at 4%.

Monthly gap
$2,416.67

What moves the number · Private income needed

Input−10%Now+10%
Income needed$24,800$29,000$33,200
State pension$30,300$29,000$27,700

Solve for an input

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Top-up needed beyond the state amount.

A worked example

Starting figures

Income needed
$42,000
State pension
$13,000
Withdrawal rate
4%

What it returns

Private income needed
$29,000
Pot required
$290,000
Monthly gap
$2,416.67

How to read the results

With the defaults above, private income needed works out at $29,000.

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