Parking cash before Jan 1: limits, maturities and tax timing
- I bond limit$10,000electronic, per SSN, per calendar year
- Last bill maturity in 2026Dec 31from Treasury results
- First in 2027Jan 5from Treasury results
What the calendar changes on Jan 1 for cash in savings bonds, Treasury bills and CDs: the I bond and EE bond calendar-year purchase limits, which T-bills mature in 2026 versus 2027 (from Treasury auction results and the upcoming auction schedule), and when each kind of interest is generally reported for tax purposes.
Treasury data retrieved Oct 24, 2026; TreasuryDirect and IRS rules checked Oct 24, 2026.
Calendar-year limits
| Item | Rule | Source, date |
|---|---|---|
| Series I electronic bonds | Up to $10,000 per SSN (or EIN) per calendar year; $25 minimum, to the penny | TreasuryDirect, Oct 24, 2026 |
| Series EE electronic bonds | Separate limit: up to $10,000 per SSN per calendar year | TreasuryDirect, Oct 24, 2026 |
| I bond rate, issued May 1 to Oct 31, 2026 | 4.26% composite (0.90% fixed) | TreasuryDirect, Oct 24, 2026 |
| I bond rate from Nov 1, 2026 | Not published as of Oct 24, 2026 | TreasuryDirect |
| Treasury bills | $100 minimum; $10 million per auction (non-competitive); no calendar-year cap | TreasuryDirect, Oct 24, 2026 |
Limits as posted by TreasuryDirect. Savings bonds purchased as gifts have their own rules on TreasuryDirect.
T-bills maturing around year-end
Bills already issued that mature between Dec 1, 2026 and Jan 31, 2027, from U.S. Treasury auction results. The maturity date sets the tax year in which bill interest is generally reported (see below).
| Maturity date | Tax year of maturity | Bills maturing that day | Official results |
|---|---|---|---|
| 2026 | 17-Week (auction Jul 29, issued Aug 4); 8-Week (auction Oct 1, issued Oct 6) | 17-Week results · 8-Week results | |
| 2026 | 26-Week (auction Jun 1, issued Jun 4); 13-Week (auction Aug 31, issued Sep 3); 6-Week (auction Oct 20, issued Oct 22) | 26-Week results · 13-Week results · 6-Week results | |
| 2026 | 17-Week (auction Aug 5, issued Aug 11); 8-Week (auction Oct 8, issued Oct 13) | 17-Week results · 8-Week results | |
| 2026 | 26-Week (auction Jun 8, issued Jun 11); 13-Week (auction Sep 8, issued Sep 10) | 26-Week results · 13-Week results | |
| 2026 | 17-Week (auction Aug 12, issued Aug 18); 8-Week (auction Oct 15, issued Oct 20) | 17-Week results · 8-Week results | |
| 2026 | 26-Week (auction Jun 15, issued Jun 18); 13-Week (auction Sep 14, issued Sep 17) | 26-Week results · 13-Week results | |
| 2026 | 17-Week (auction Aug 19, issued Aug 25); 8-Week (auction Oct 22, issued Oct 27) | 17-Week results · 8-Week results | |
| 2026 | 26-Week (auction Jun 22, issued Jun 25); 13-Week (auction Sep 21, issued Sep 24) | 26-Week results · 13-Week results | |
| 2026 | 17-Week (auction Aug 26, issued Sep 1) | 17-Week results | |
| 2026 | 26-Week (auction Jun 29, issued Jul 2); 13-Week (auction Sep 28, issued Oct 1) | 26-Week results · 13-Week results | |
| 2027 | 17-Week (auction Sep 2, issued Sep 8) | 17-Week results | |
| 2027 | 26-Week (auction Jul 6, issued Jul 9); 13-Week (auction Oct 5, issued Oct 8) | 26-Week results · 13-Week results | |
| 2027 | 17-Week (auction Sep 9, issued Sep 15) | 17-Week results | |
| 2027 | 26-Week (auction Jul 13, issued Jul 16); 13-Week (auction Oct 13, issued Oct 15) | 26-Week results · 13-Week results | |
| 2027 | 17-Week (auction Sep 16, issued Sep 22) | 17-Week results | |
| 2027 | 26-Week (auction Jul 20, issued Jul 23); 13-Week (auction Oct 19, issued Oct 22) | 26-Week results · 13-Week results | |
| 2027 | 17-Week (auction Sep 23, issued Sep 29) | 17-Week results | |
| 2027 | 26-Week (auction Jul 27, issued Jul 30) | 26-Week results |
U.S. Treasury Fiscal Data API and TreasuryDirect results PDFs, retrieved Oct 24, 2026.
Upcoming bill auctions
| Auction | Term | Issue | Maturity | Year |
|---|---|---|---|---|
| 13-Week | (computed) | 2027 | ||
| 26-Week | (computed) | 2027 | ||
| 52-Week | (computed) | 2027 | ||
| 6-Week | (computed) | 2026 |
Announced and tentative auctions from the Treasury upcoming-auctions dataset, retrieved Oct 24, 2026. Maturity is computed here as issue date plus the term; the official maturity date is in each auction announcement. Schedules can change.
When interest is generally reported
| Holding | Interest generally reported | Source |
|---|---|---|
| Treasury bill | When the bill is paid at maturity (difference between price paid and face value) | IRS Pub. 550 |
| Bank CD, 1 year or less | When received or available without a substantial penalty | IRS Pub. 550 |
| Bank CD deferring interest over 1 year | Original issue discount rules apply | IRS Pub. 550 |
| Savings account | When credited and available | IRS Pub. 550 |
| Series EE / I bond | When redeemed or at final maturity, or yearly if the owner elects | IRS Pub. 550; TreasuryDirect |
Summary of IRS Publication 550 (page last reviewed Apr 30, 2026, checked Oct 24, 2026) for cash-method individual taxpayers. State treatment: Treasury bill and savings bond interest is exempt from state and local income tax per TreasuryDirect.
Not confirmed
As of Oct 24, 2026: the I bond and EE bond rates for bonds issued from Nov 1, 2026 are not published; Treasury bill auction schedules for December 2026 beyond those listed above are not yet announced; and the TreasuryDirect pages checked do not state a cutoff for which calendar year a late-December savings bond purchase counts toward. None of these are estimated here.
Related: where to park cash: T-bills vs CDs vs savings · year-end money moves 2026 · Series EE vs I bonds · T-bill at TreasuryDirect · auction calendar.
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Frequently asked questions
Does the I bond purchase limit reset on Jan 1?
Yes. TreasuryDirect lists the limit per calendar year: up to $10,000 in electronic Series I bonds and, separately, up to $10,000 in electronic Series EE bonds per Social Security Number (checked Oct 24, 2026). Gift purchases are counted separately under TreasuryDirect's rules.
In which tax year is T-bill interest reported?
IRS Publication 550 says the difference between the discounted price and the face value is interest income, generally reported when the bill is paid at maturity. A bill that matures in January 2027 generally produces 2027 interest income.
In which year is CD interest reported?
Per IRS Publication 550, CD interest is generally included in income when it is actually received or is available without a substantial penalty, including CDs of 1 year or less that pay at maturity. CDs that defer interest for more than 1 year follow the original issue discount rules.
When is savings bond interest taxed?
IRS Publication 550 says EE and I bond interest is payable when the bond is redeemed. TreasuryDirect notes the owner can choose to report each year's earnings or wait until the bond is cashed in or reaches final maturity.
Is this tax or investment advice?
No. This page summarizes published IRS and TreasuryDirect rules and Treasury auction data. Individual situations differ; a tax professional can address specifics.