YNAB vs. Sinking Funds: Do You Need Both?

If you've spent any time in personal finance communities, you've probably encountered both YNAB (You Need A Budget) and sinking funds — and if you've tried to figure out how they relate to each other, you may have ended up more confused than when you started. Are sinking funds a feature inside YNAB? Is YNAB a way to manage sinking funds? Do you need both? This post gives you a clear, honest answer — without telling you YNAB is terrible or that it's the only way to manage money.

What YNAB Actually Is

YNAB is a full zero-based budgeting application. Its core philosophy is that every dollar you earn gets "assigned" to a category before you spend it. You link your bank accounts, categorise every transaction, and maintain a budget where your income exactly equals your assigned categories each month — hence zero-based.

YNAB does support saving for irregular expenses — they call these categories "targets" and you can set monthly savings goals for future expenses. This is effectively the same mechanism as a sinking fund, built into a comprehensive budgeting framework.

YNAB costs $14.99/month or $109/year (as of 2026). It has a 34-day free trial.

What Sinking Funds Are (Independent of Any Tool)

Sinking funds are a savings strategy, not a software product. You can run sinking funds with YNAB, with a spreadsheet, with a simple notebook, with multiple bank accounts, or with a dedicated tracker like Finchsave. The strategy itself — save small amounts regularly toward a specific future expense — doesn't require any particular tool.

What sinking funds need from a tool is: a way to track the balance of each fund, its target, its deadline, and how much you should be contributing per pay period. That's the whole job description. Some tools do many other things on top of that. Some tools do only that.

For the full primer on sinking funds, see What Is a Sinking Fund?

YNAB vs. a Sinking Fund Tracker: Honest Comparison

The real question isn't "YNAB vs. sinking funds" — it's "YNAB vs. a simpler tool for tracking sinking funds."

YNAB is probably worth it if:

• You want to budget every single dollar of your income across all spending categories
• You carry irregular credit card spending and want to reconcile it in real time
• You're actively working through debt and need visibility into every category simultaneously
• You find the zero-based methodology genuinely motivating and will actually use the full feature set
• The $14.99/month cost is small relative to the clarity it provides you

A simpler sinking fund tracker is probably better if:

• Your main need is tracking savings goals for specific future expenses — not budgeting all spending
• YNAB's learning curve has defeated you before or feels like overkill for your situation
• You manage your day-to-day spending well and just need help with the irregular, big-ticket stuff
• You want to pay considerably less ($4/month vs. $14.99/month)
• You want to be up and running in minutes, not hours

The Honest Case for YNAB

YNAB has a passionate user base for good reason. Its zero-based method is genuinely effective at eliminating financial ambiguity — when every dollar has a job, you make conscious trade-offs about money rather than drifting. For people managing complex financial situations (irregular income, significant debt, multiple shared accounts), YNAB's feature set is hard to match.

If you're already a YNAB user and it's working for you: keep using it. YNAB handles sinking funds well. You don't need to switch anything.

The Honest Case for a Simpler Approach

YNAB's complexity is also its biggest friction point. The learning curve is real. The need to log every transaction is ongoing. For many people, the gap between "this is impressive" and "I actually use this consistently" is exactly what causes well-intentioned budgeting systems to get abandoned after three months.

If what you mainly need is a clear, low-friction way to save toward specific goals without rebuilding your entire relationship with money, a purpose-built sinking fund tracker is faster to set up, simpler to maintain, and meaningfully cheaper.

Can You Use Both?

Yes — and some people do. They use YNAB for day-to-day spending and transaction categorisation, and Finchsave for a cleaner view of their sinking fund progress specifically. There's no conflict. The tools serve different aspects of financial management.

But if you're choosing one starting point, the decision comes down to this: if you want to manage your entire budget, start with YNAB. If you want to stop being blindsided by predictable large expenses, start with sinking funds — and a simple tracker is enough to get the job done.

For a side-by-side comparison of digital tracking vs. spreadsheets, see Sinking Fund Spreadsheet vs. App: Which Is Right for You?