TreasuryDirect and I bonds from abroad: the locked account nobody plans for (and the 16-week unlock)

The short version. You cannot open a new TreasuryDirect account after you move abroad — it requires a US address of record and a US ACH bank account, full stop. Existing accounts can lock (a foreign address change or failed logins are common triggers), and the only way back in is mailing FS Form 5444 with a notary or signature-guarantee stamp. For holders in Japan, the documented notary path is a US Embassy or consulate (~$50, by appointment), and Treasury officially allows up to 16 weeks to process the paper form. Fix your bank link, contact info, and login recovery before you leave — that’s the only reliable mitigation. This is my own research, not tax advice.

When I mapped out the money side of leaving the US, TreasuryDirect was the account I almost forgot — because it sits there quietly paying interest and you never log in. That’s exactly why it bites people. It has no app, no overseas support desk, and a locking mechanism that assumes you’re a US resident with a US notary down the street. If that stops being true, getting back in can take months.

Can you open a TreasuryDirect account from abroad? No

TreasuryDirect’s published requirements to open an account are:

Requirement	Detail
SSN	Valid US Social Security Number
Address of record	Must be a US address — foreign addresses are not accepted
Bank account	A US bank that accepts ACH debits and credits
Age	18+ (minors held via a parent/guardian linked account)

If you’ve already moved and closed your US bank or given up your US address, you can’t open a new account. This isn’t a glitch you can talk your way around on the phone — it’s the explicit rule. If buying I bonds is part of your plan, do it before you leave, while the address and bank account are still genuinely yours.

One thing worth flagging: the paper I bond route via IRS tax refund (Form 8888) that many older guides mention is no longer available. As of January 1, 2025, Treasury discontinued paper I bond sales entirely — electronic purchase through TreasuryDirect is now the only option. The $10,000/year-per-SSN electronic limit is now the only limit that matters.

Why existing accounts lock

TreasuryDirect locks accounts when its automated identity check can’t confirm you’re you. The common triggers:

• Multiple failed login attempts. Simple lockouts can sometimes be cleared by Customer Service (844-284-2676) — but that line runs US business hours only, which from Japan means the middle of your night.
• Sign-up ID verification failure — the most common reason people get told to file FS Form 5444 in the first place.
• Entity accounts (trusts, businesses, estates) are locked automatically until Form 5444 is received.
• Changing your address to a foreign one. Reports consistently show this triggers manual review or restrictions, and some users say Customer Service simply cannot change the address to a non-US one at all — the system wants a US address.

That last point is the trap. The “responsible” instinct — update your address so records are accurate — is the very thing that can freeze the account. I go into the same address dilemma for brokerages in keeping your US brokerage when moving to Japan and changing your brokerage address for Japan; TreasuryDirect is stricter than any of them.

FS Form 5444: the only way back in

If you’re locked out, there is exactly one documented path, and it’s paper.

Step	Detail
Form	FS Form 5444 — TreasuryDirect Account Authorization
Signature	Signed in ink in front of a notary public or authorized certifying officer
Notary accepted	Since August 2022, a notary public seal is accepted. Before that you needed a bank signature/medallion guarantee — both are valid now.
Submission	Physical original only. No email, fax, photocopy, or upload portal exists.
Mail to	Treasury Retail Securities Services, P.O. Box 9150, Minneapolis, MN 55480-9150 — USPS only (FedEx/UPS can’t deliver to a P.O. box)
Processing	Official automated reply says “up to 16 weeks”; real-world reports often 3–6 weeks

Read that “USPS only” line twice. If you’re in Japan and reach for a courier because it feels safer, it won’t be deliverable. Regular international post to a P.O. box is the route.

Getting the stamp in Japan

A Japanese notary (kōshōnin) is not valid — Treasury needs a US notary or recognized certifying officer. Your realistic options:

Option	Cost	Notes
US Embassy / consulate notarial service	~$50	Available in Tokyo, Osaka, Sapporo, Naha, Nagoya, Fukuoka. Appointment required; the consular officer acts as a US notary and the State Department seal is accepted.
Online remote notarization	~$25–$149	Treasury has not explicitly confirmed acceptance — risk of rejection.
Online medallion guarantee service	~$149	Reported to work; the most expensive path.
US bank branch abroad	Varies	Almost no US retail banks have Japan branches — effectively unavailable.

The embassy is the documented, lowest-risk path. Appointment waits at busy posts like Tokyo can run weeks, and that stacks on top of Treasury’s processing time.

What this actually costs you: time

The money cost is small — ~$50 for the notary. The real price is measured in months. Embassy appointment wait (weeks) + international mail + Treasury processing (up to 16 weeks) can mean 3–5 months locked out of your own money. If a rate reset or a redemption you were counting on lands in that window, you simply can’t act. Compare that to the fix — a 20-minute login before you fly — and the math is not close. I saw the same pattern with bank accounts; the playbook is in locked out of your US bank from abroad.

Your pre-departure checklist

Do this while you still have a US address and an active US bank:

1. Confirm the bank link works. Log in, verify your linked US bank shows correctly and is ACH-enabled. A small test purchase proves the pipe is open.
2. Record your account number. TreasuryDirect logs you in by account number, not email. Lose it abroad and you’ve added a hurdle to every other hurdle. Save it somewhere you’ll still have.
3. Fix login recovery and 2FA. Recovery codes and one-time passwords come by email, and a US phone may be needed. Sort out a US number that survives the move before you leave — I compare the options in Google Voice vs a real US number for 2FA and keeping your US phone number for 2FA.
4. Don’t fabricate a US address. TreasuryDirect cross-checks against your bank and ID records. If a family member’s address is genuinely your forwarding address, you may set it while it’s legitimately yours — but a made-up address invites exactly the restriction you’re trying to avoid.
5. Weigh redeeming early. If any I bonds are near their 5-year mark, consider whether redeeming before you go beats the risk of an overseas unlock.

On the 2FA point specifically: because your bank, brokerage, and TreasuryDirect can all hang off one US phone number, keeping that number alive is the load-bearing piece of the whole plan. When I researched this for my own move, the cheapest way to keep a real US number after leaving was a low-cost carrier plan — Tello runs about $5/month for a keep-alive line. (Full disclosure: the Tello links here are a referral — you and I each get $10 in Tello credit if you sign up through them. I recommend it because keeping a real US number is the single cheapest fix for the 2FA problem, not because of the credit.)

I bonds: the details that matter when you’re leaving

Feature	Detail
Annual limit (electronic)	$10,000 per SSN via TreasuryDirect
Paper bonds via tax refund	No longer available — Treasury discontinued paper I bond sales as of January 1, 2025; the Form 8888 purchase option has been eliminated
Minimum hold	12 months before any redemption
Early-redemption penalty	Forfeit last 3 months of interest if redeemed before 5 years
Maturity	30 years
Tax	Interest is federal-taxable (deferrable to redemption), exempt from state/local — needs verification for your situation
FBAR / FATCA	Do not apply — US Treasury instruments aren’t “foreign financial accounts” — as of my research; verify against current IRS guidance

One thing I won’t do is quote you a current composite rate — it resets every May and November, so check TreasuryDirect’s own I bonds rate page before you buy. The FBAR point is a genuine relief: your I bonds aren’t a Japan-side reporting headache. But the interest is still US-taxable, and your first year of filing after leaving has enough moving parts that I gave it its own piece: your first tax year after leaving the US.

FAQ

Can I keep my existing I bonds after I move to Japan?

Yes — you can hold them and they keep earning. The risk isn’t ownership, it’s access: if the account locks, unlocking from abroad means FS Form 5444 and potentially months of waiting. Keep your login, US number, and recovery email intact so you never trip the lock.

Should I change my TreasuryDirect address to my Japan address?

I’d be very cautious. A foreign address change is one of the most-reported lock triggers, and Customer Service may not even be able to process it. If you have a legitimate US forwarding address (say, a family member’s), that’s the lower-risk choice — never invent one, because Treasury cross-checks against your bank and ID.

Do I have to report my TreasuryDirect account on an FBAR?

No. US Treasury securities held directly aren’t “foreign financial accounts,” so FBAR and FATCA don’t apply to them. The interest is still federally taxable, though — this is general research, not tax advice, so confirm your own situation against IRS guidance and a professional.