[sp332]

Also, individuals can only buy $10,000 of I bonds per year, plus your tax return up to another $10,000.

[awb]

https://www.treasurydirect.gov/savings-bonds/i-bonds/

>Is there a maximum amount I can buy?

> In a calendar year, one Social Security Number or one Employer Identification Number may buy:

> * up to $10,000 in electronic I bonds, and

> * up to $5,000 in paper I bonds (with your tax refund)

> For individual accounts, the limits apply to the Social Security Number of the first-named in the registration.

[belltaco]

> plus your tax return up to another $10,000.

$5K, not 10K.

[adammoelis]

Correct - good point. Edited the post to add this piece of info which is important.