Most advice about organizing notes is really advice about filing, and filing is the part that fails. Here is what holds up on a library you have had for years rather than one you started on Sunday.
The folder tree is where systems go to die
You start with five folders. A year later there are forty, nested three deep, and you cannot remember whether the contractor's quote went in House, or Renovation, or 2025. The structure got harder to use at exactly the rate it got more complete.
The reason is not laziness. A folder forces one answer to the question of where something goes, and most notes honestly have two or three. Every time you hesitate at that choice you are paying the tax, and every time you guess wrong you have hidden the note from yourself.
Search is the interface. Structure is the fallback.
Be honest about how you actually retrieve a note: you type a word you remember. You almost never navigate to it. So the job of organizing is not building the perfect location, it is making sure the word you will remember later is in the note, and that the note is in the results when you type it.
Which makes titles the highest-leverage thing you can change today. Not Notes, not Meeting, not Ideas. Write the words you would search for: Bosch SHX78 dishwasher, receipt and serial. It looks clerical and it is the difference between finding it in four seconds and not finding it.
Three decisions worth making once
Keep it flat. One level of folders, and resist the second. If you are nesting, you are guessing at a hierarchy your future self will not reconstruct.
Use tags for anything that cuts across. A note can carry two tags and cannot live in two folders. Receipts, a client name, a trip: those are tags. The folder is for the one home the note obviously has.
Use smart folders for anything a rule can answer. A smart folder is a saved search that keeps itself current, so you never file into it and it can never fall behind. Anything you would otherwise sort by a rule, everything tagged receipt, everything with an attachment, everything edited this month, should be one of these rather than a folder you maintain by hand.
The decision that matters more than those three
Everything above is about arranging what you have. The larger lever is reducing what is in the way.
A note library is really two libraries: the notes you are working with, and the notes you are finished with. Most apps only model the first one, so both live in the same list and the same search, and the second kind grows without limit for as long as you use the app. That is why search results get worse the longer you have been somewhere, and why no amount of tagging fixes it. You are not disorganized. You are searching a pile that includes a decade of things you already finished.
So the highest-value habit is not a reorganization, it is a short weekly pass: anything finished, archive it. Not delete, archive. Out of the list, out of the search you type every day, kept whole, and back the moment you go looking for it on purpose.
If your app has no archive you will improvise one out of a folder, which half works: the note leaves your list and stays in every search result. That is worth knowing before you blame yourself for the mess.
Egg is the app I build, so treat this as a disclosure. Archiving is one move and it works on a whole notebook as well as a note, and when a search comes back empty it tells you how many matches are waiting in the archive, so putting things away never costs you the ability to find them.
What not to bother with
Naming conventions with prefixes and codes. They survive about three weeks, and the half-converted library they leave behind is worse than the one you started with.
Reorganizing everything in one sitting. Fix structure as you touch notes, and let the ones you never open stay exactly where they are, because you are never going to look for them anyway.
Moving to a new app to fix an organizing problem. It is usually the same library, differently arranged, and the second month feels like the last one. Move for a missing capability, not for a fresh start.
Notebooks, tags, and files that live inside the note. Native on iPhone, iPad and Mac plus a full web app. Free for 100 notes, and the export door is never locked.
Start freeFrequently asked
What is a smart folder in notes?
A saved search that presents itself as a folder. You set a rule, such as everything tagged receipt or everything with an attachment, and the folder fills and updates itself. You never file anything into one, which is exactly why it cannot fall out of date the way a hand-maintained folder does.
Should I use folders or tags?
Folders for the one obvious home a note has, tags for everything that cuts across several. A note can carry three tags and cannot sit in three folders, so anything you would want to find from more than one direction should be a tag. Keep folders to a single level.
How often should I organize my notes?
Do not schedule a reorganization, because it never survives contact with a busy week. A five-minute weekly pass to archive what is finished does more for findability than a whole afternoon of refiling.
Is it better to delete or archive old notes?
Archive. Deleting is for genuine rubbish, and the notes people most regret losing were deleted deliberately, because deleting was the only way to get something finished out of the way. Archiving keeps the note and still clears your list and your everyday search.