Your Newborn's Steuer-ID: Why It Takes Months and What to Do About Kindergeld While You Wait

The Official Rule

Every person in Germany, including a newborn, gets a Steuerliche Identifikationsnummer (Steuer-ID) from the Bundeszentralamt für Steuern (BZSt), a permanent 11-digit number used across tax and benefit administration for life. For a baby, this isn’t something you apply for. It’s triggered automatically once the birth data reach the BZSt: the Standesamt (registry office) reports the birth, the local registration office (Meldebehörde) transmits the data to the BZSt, and the BZSt then posts the number to the child’s address. That happens as a routine part of registering the birth, not a separate errand for parents.

The timing is the part worth understanding clearly, because it’s slower than most families expect. The data transfer to the BZSt itself is often described as taking only about 2 to 3 working days, and the Steuer-ID letter is said to follow within about a week of the BZSt receiving the data (the BZSt does not publish these figures, it only says it sends the number once the registration office has transmitted the data). The gap between those two figures and the commonly cited “budget around 3 months” guidance comes down to everything that has to happen first: your baby’s birth registration itself needs to be fully complete at the Standesamt before any of this can start, and that process has its own timeline. If your Geburtsurkunde is taking a while, the Steuer-ID clock hasn’t really started yet either.

1. Standesamt birth registrationMust be fully complete before anything else starts, timeline varies by case.
2. Data transfer to BZStOften described as about 2 to 3 working days once registration is complete (no official figure).
3. Steuer-ID letter arrivesOften within about a week of the BZSt receiving the data (no official figure).
4. Whole chain from birthCommonly around 3 months in total, budget for it.

This becomes practically important the moment you go to apply for Kindergeld. You’re allowed to submit a Kindergeld application without the child’s Steuer-ID already in hand, the Familienkasse accepts it, but the claim generally can’t be finalized, and no payment goes out, until the number is on file. (If the BZSt hasn’t assigned the child’s number within 3 months through no fault of yours, the Familienkasse’s internal guidance allows it to set Kindergeld provisionally, under reservation, and it can also look the number up itself.) The reassuring part: once the Steuer-ID arrives and the claim is finalized, payment is made retroactively to your original eligibility date, so waiting for the number rather than chasing it aggressively doesn’t cost your family money, it just delays when the first payment lands in your account. One limit to keep in mind: Kindergeld is only paid retroactively for the 6 months before the month your application arrives, so file the application itself in good time. Since 2024, the Familienkasse also sends parents a welcome letter with a QR code to a prefilled Kindergeld application after a birth, usually a few days after the Steuer-ID is issued. A law to pay Kindergeld without any application is planned for 2027, but it was still a government bill at the time of this review.

A duplicate ID, called Mehrfacherfassung, sounds more alarming than it is. German law (§ 139a AO) intends for every person to have exactly one Steuer-ID for life, but data occasionally gets registered and transmitted more than once for the same person, resulting in two numbers existing briefly. When the BZSt catches this, as a rule the number assigned first stays the valid, permanent one, the duplicate is deactivated, and the two records are linked internally so no history of taxes or benefits tied to either number is lost. A related point is equally reassuring: the BZSt states that the Steuer-ID is permanently valid and does not change with a move, so a child who has been assigned a number keeps the same one for life, regardless of time spent outside the country. (Children who live abroad are generally not assigned a number at all, which is why the registration step in Germany matters.)

What Real People Say

The most common frustration described by parents isn’t the wait itself, it’s the uncertainty of not knowing whether something has gone wrong versus simply being early in a process that’s genuinely supposed to take a few months. Forum threads on this topic consistently converge on the same practical anchor point: check whether the birth registration at the Standesamt is actually fully finished first, since a surprising number of “the Steuer-ID never came” situations trace back to a registration step that was still pending, not a problem with the BZSt itself.

On the Kindergeld side, the recurring piece of advice from people who’ve been through it is to treat gathering the rest of your application documents as the productive use of the waiting period, rather than repeatedly calling to check on the Steuer-ID’s status. Since payment is made retroactively once the number is on file (within the 6-month limit counted from your application), most families describe simply submitting everything, Steuer-ID included, once it naturally arrives rather than trying to force an earlier resolution.

Step by Step

1. Confirm your baby’s Standesamt birth registration is fully complete first. The Steuer-ID process can’t meaningfully start until this is finished, and a stalled registration is the most common hidden cause of a longer-than-expected wait.
2. Expect the Steuer-ID letter within roughly 3 months of the birth, understanding that the underlying data transfer is fast, most of the window is downstream of registration completing and the letter being generated and mailed.
3. Gather the rest of your Kindergeld application documents while you wait, rather than treating the Steuer-ID as a blocker to starting anything else.
4. Submit your Kindergeld application whenever your other paperwork is ready, with or without the Steuer-ID already in hand, since payment backdates once the ID is on file, but only for the 6 months before the month your application arrives, so don’t let the application sit for long.
5. If you’re well past 3 months with no letter, verify the birth registration status, then ask your local Meldebehörde (or the Standesamt) and tell your Familienkasse. The BZSt itself points parents to the registration office first.
6. If you discover two Steuer-IDs for your child, don’t panic or try to pick one yourself. As a rule the originally assigned number is the valid one; raise any specific confusion directly with the office requesting the number.
7. If your family relocates abroad and later returns to Germany, don’t expect or request a new Steuer-ID. The original number stays valid for life.

Compliance Note

This page explains the general framework for how a newborn’s Steuer-ID is issued and how it interacts with Kindergeld timing, but it is not tax or legal advice. Processing times can vary by region and season, and specific benefit applications may have their own documentation requirements beyond the Steuer-ID itself. For anything specific to your situation, confirm directly with your Meldebehörde, the BZSt or your Familienkasse.