You make enough. The bills get paid and there's money left over. You know some of it should go toward investing, an emergency fund, or the trip you keep talking about. But a few months go by, the leftover is still sitting in checking, and your investment account looks the same as it did last year.

The fix: when you get paid, move a share of it into separate accounts right away. Whatever's left in checking is yours to spend.

Why do it on payday?

If you make good money, saving what's left at the end of the month can work. But it takes effort. Every month you have to work out what's left over, decide where it goes, and remember to actually move it. When life gets busy, it feels like too much work, and the money sits in checking doing nothing.

Setting money aside on payday turns it into a routine. You pick the percentages once, and every time you get paid, your retirement, emergency fund, and goals get their share. Set aside money, spend the rest.

Payday also comes with a built-in reminder. In Atomic Habits, James Clear calls this habit stacking: tie a new habit to something that already happens, and it's much easier to stick to. Getting paid already happens. The deposit shows up, and that's your cue to move the money.

Give each kind of savings its own account

The money you set aside needs somewhere to go that isn't checking. A separate account does two things:

• It's out of the way. Money for your goals isn't mixed in with money for groceries.
• The balance tells you what it's for. Your emergency fund account holds your emergency fund. Nothing to figure out or track.

Most banks let you open a new savings account in their app in about two minutes, and many let you give each one a nickname like "Emergency fund" or "Japan trip." Do that. It makes payday transfers easy, because each account tells you what it's for.

What to set money aside for

Here's what I'd put money toward, in order:

1. Investments. This is the money that grows into your retirement. A retirement account like an IRA or 401(k) in the US, or a TFSA or RRSP in Canada. Make sure the money actually gets invested once it's there. Cash sitting in a retirement account just sits there. Not sure what to invest in? Here's where I'd start.
2. Emergency fund. Three to six months of essentials in a high-interest savings account. This covers a job loss, a car repair, or a slow few months, so a surprise doesn't land on a credit card.
3. Savings goals. A vacation, a new car, a down payment. You can give each goal its own savings account, or keep them all in one account and note how much belongs to each. I do the second.
4. Fun money. A guilt-free spending account gets its share every payday, and you can spend it to zero without a second thought.
5. Taxes, if you're self-employed. Nobody's taking taxes off your pay, so you set it aside yourself. 25 to 30% is a common starting point. Check with an accountant for your real number.

What about bills that don't come every month, like car insurance or registration? They don't need their own account. Your emergency fund is there for expenses that catch you off guard, so let it cover them. Or keep a little extra in checking so they're paid when they come up. Monthly bills like rent just stay in checking until they come out.

You don't need all of these on day one. Checking, investments, and an emergency fund are the core. Start there. Add the rest when you're ready.

How much to set aside

Use percentages, not dollar amounts. 15% of every paycheck is easy to remember, it works whether you get paid $1,500 or $3,000, and it keeps working after a raise or a big bonus.

Here's what that might look like. Try a few amounts:

If you're not sure where to start, try 20% total across retirement, your emergency fund, and goals. Pick numbers you can keep doing every payday. Starting the habit is the most important part. Once moving money on payday is just something you do, adjusting your percentages is easy.

Your percentages change as life does. When your emergency fund is full, send its share to investments instead. When you get back from Japan, the trip's share can go toward the next goal. You decide these things a few times a year, not every payday. For more on picking percentages, see the benefits of percentage-based buckets.

Every payday, not every month

If you're paid once a month, setting money aside each month is the same thing. But if you're paid every week or every two weeks, do it every time money lands.

The routine looks like this:

1. Money lands in your checking account.
2. Work out each account's amount. A calculator works fine.
3. Transfer each amount to its account in your banking app.
4. Done until next payday.

It takes me about four minutes. There's nothing to decide, because the decisions were made when you picked your percentages. Payday is just following through. For a closer look at the transfers themselves, see how to move your money on payday.

What about automatic transfers?

If your paycheck is the same every time, set up scheduled transfers at your bank for the day after payday and you're done. That's the best setup there is, and it's free.

If your income changes, fixed transfers start to break. Overtime, shift work, tips, commission, or clients who pay whenever they feel like it all mean a $500 transfer is too much on a slow payday and too little on a big one. Even a steady paycheck changes with a raise, a promotion, or a new job, and fixed transfers tend to stay at the old amounts for years. That's where percentages and a payday routine come in: you work out new amounts from what actually landed, every time.

Over a few paydays of ups and downs, it looks like this. Big paydays put more toward your investments and goals without you deciding anything, and small ones still fit.

Tools that help you put money aside

There are three kinds of tools for this, and they suit different situations:

• Your bank's scheduled transfers. Free and fully automatic. Best when your pay is the same every time.
• Auto-save and round-up apps. They move small amounts for you, often into an account the app holds. Good for starting a habit, but the app picks the amounts, and they're usually small.
• A payday routine app. You enter what you were paid, and it tells you exactly what to move into each of your real accounts.

The last one is what I built. Wealthsplitter takes what landed and gives you a checklist like "move $600 to your retirement account." You check off each transfer as you make it at your bank. No expense tracking and no bank connection. Over time, your stats show how much you've put toward retirement, your emergency fund, and each goal, and what you're on pace for. I've done this every payday for over two years.

Frequently asked questions

How much money should I set aside from each paycheck?

A good starting point is 20% of each paycheck, split between retirement, your emergency fund, and savings goals. If that feels like too much, start lower. Starting the habit matters more than the number, and you can raise your percentages once it sticks.

Where should I put the money I set aside?

In separate accounts, not your checking account. Use a high-interest savings account for your emergency fund and savings goals, and a retirement or investment account for investing. That way checking only holds spending money, and each balance shows exactly how much you have for that goal.

How do I set aside money for bills?

Monthly bills like rent can stay in checking until they come out. Bills that come once or twice a year, like insurance or car registration, don't need their own account. Let your emergency fund cover them, or keep a little extra in checking so they're paid when they come up.

How much should I set aside for emergencies?

Aim for three to six months of essentials (housing, groceries, bills, transportation) in a high-interest savings account. If your income changes a lot, lean toward six. Once it's full, send that share to investments instead.

How do I save for a vacation?

Set money aside for it in a savings account, either its own or one you share with other goals. Divide what it will cost by the number of paydays before you leave, and move that amount every payday. When you go, the money is already there.

My paycheck changes every week. Do I need to redo my split?

No. Your percentages stay the same, and each paycheck gets split by them. A bigger paycheck means bigger transfers and a smaller one means smaller transfers, with nothing to recalculate.

Should I plan around my lowest paycheck or my average one?

Neither. Skip predicting and split each paycheck as it lands, using the same percentages every time. That works on a small paycheck and a big one.

What's the best app to put money aside?

If your pay is the same every time, your bank's scheduled transfers are free and work well. If your income changes, you need something that works out new amounts each time. Wealthsplitter takes what you were paid and tells you exactly how much to move into each of your accounts.

Want to go deeper?

• The guilt-free spending account
• How to move your money on payday
• Unexpected benefits of percentage-based buckets