Where is My Stimulus Payment? Here’s What You Need to Check.

It’s been weeks since people started getting coronavirus relief payments. You’ve checked and rechecked your eligibility, just to be sure.

But still, no $1,200 stimulus payment has arrived in your bank account or mailbox. Perhaps $3,400 is riding on this for you, your spouse and your two children, for whom you’re supposed to get $500 each.

Tens of millions of people have already received their payments, but many others are still waiting or wondering. There are a lot of reasons you could be among them, even if the government has removed some of the hurdles it initially set up.

A couple of weeks ago, the I.R.S. introduced its “Get My Payment” tool to help people figure out when and how their money might be arriving. The unveiling didn’t go so well: Many users did not realize how picky the site was about, say, entering an address that precisely matched the one on their most recent tax return.

Also, there were lots of confusing messages indicating that there was no information available at all. Things have improved some since then, and the I.R.S. is updating the information once each day, usually in the middle of the night.

You may need information from recent tax returns at the ready to use the tool, and it doesn’t work for recipients of Supplemental Security Income and Veterans Affairs benefits.

Make sure you’ve filed the right paperwork.

People who don’t usually file a tax return should give the I.R.S. an assist.

If you haven’t had to file a return because your gross income did not exceed $12,200 ($24,400 for married couples), you still qualify for a payment. But if you’re not a recipient of S.S.I. or V.A. benefits, you should fill out a special form for non-filers.

The government is also crosschecking all the Social Security and V.A. databases and issuing payments to those recipients for whom it does have bank account or similar information, but that process can add time.

But May 5 is an important deadline: S.S.I. and V.A. beneficiaries who didn’t have to file a tax return in 2018 or 2019 and have children age 16 or under should register online with the I.R.S. non-filer tool to get the $500 per child payment more quickly.

Don’t (necessarily) panic if the payment went to a strange account.

One known quagmire: If you filed taxes in 2018 or 2019 with the help of a third-party company, you may have taken advantage of something called a refund anticipation loan. The company may have set you up with a temporary account to process the loan and give you access to that money.

The bank information the I.R.S. has for you may be for that account, which may be closed at this point. That means that when the I.R.S. tries to deposit the stimulus money there, the process will break down.

At that point, the I.R.S. is supposed to send a paper check to the address on the most recent tax return, or one on file with the U.S. Postal Service.

You should be able to track this whole messy process using the “Get My Payment” service, but it could take several more weeks to get your payment.

But worry about fraud if this happens.

A lot of money is flowing right now, so people will indeed try to steal it. The I.R.S. knows this, so 15 days after it issues your payment, it is supposed to send confirmation letters to the most recent address it has on file for you.

That letter should explain exactly how the I.R.S. made the payment. If you haven’t received the money yet, that’s the time to worry about whether someone else took it. The letter will contain contact information for the I.R.S. if you need help.

Speed up delivery this way.

For any number of reasons, the I.R.S. may not have up-to-date information — or any at all — about your address or bank account. For instance, plenty of people don’t trust the I.R.S. with their checking account information for direct deposits or payments. Instead, they pay tax bills with paper checks and collect refunds that way, too.

If you’re in that category but are willing to change your approach, you may be able to get your payment more quickly. If the government hasn’t already started the process of sending you a paper check, it may still be possible to enter your checking account information via the Get My Payment tool to get your money more quickly.

Check your eligibility again.

People with higher incomes might not get a payment. The $1,200 payment decreases until it stops altogether for a single person earning $99,000 or a married couple who have no dependent children, file their taxes jointly and earn $198,000. And if someone else claimed you as a dependent, you don’t get a check.

Check with the I.R.S. for more information.

The agency got off to a pretty slow start in explaining how things would work, but it has now answered 38 questions in its F.A.Q. It’s also published a chart to help you figure out what, if any, additional information you may need to hand over to receive a payment or get one more quickly.