Excel vs Google Sheets vs Budget App 2026 — When Each Is Better for EU Investors

The three-way fight that never ends in personal-finance subreddits, fintech newsletters and Discord servers. Excel: the spreadsheet you already own. Google Sheets: the spreadsheet that's free, shareable and lives in the cloud. Budget app: the thing that automates the boring parts but charges you ~100 EUR/year. Each wins on different axes. In 2026, with multi-currency complexity, PSD2 bank sync, and the dawn of AI-driven cashflow forecasting, the picture has shifted again. Here is the EU-investor view.

TL;DR

Direct verdict: Use a budget app for daily bank sync and categorisation; use Google Sheets for shared household tracking and custom calculations; use Excel for offline-first, formula-heavy modelling and tax-wrapper math. The right answer is almost always a combination, not a single tool.

Counter-cases:

• A budget app loses if you have weird tax wrappers, multi-currency in a single account or need to model edge cases.
• Google Sheets loses if you need real PSD2 bank sync (third-party add-ons are flaky) or you've ever lost work to a stale tab.
• Excel loses if you need shared real-time editing or zero-friction phone entry.

EU + PL availability: All three available everywhere. Excel via Microsoft 365 (~70 EUR/year personal). Google Sheets free. Budget apps 60-110 EUR/year depending on choice.

Best for whom: spreadsheets win for control and cost; apps win for time saved. The break-even is roughly 90 minutes/month of manual reconciliation.

App features evolve. Test free tier first.

Quick Context — Why This Three-Way Comparison Won't Die

For thirty years, "track your money in Excel" was the answer. Then Mint launched in 2007 and offered free, automatic categorisation. For fifteen years, "use Mint" was the answer. Then Mint died in March 2024 and people remembered spreadsheets exist. Then Google Sheets matured into a free, shareable, formula-capable alternative to Excel. Then YNAB, Monarch and Rocket Money established the paid-app norm. Then, in 2025-2026, the AI-driven cashflow forecast emerged as a new differentiator that spreadsheets cannot easily replicate.

So in 2026, three real options live side-by-side:

1. Excel (Microsoft 365) — offline-first, formula-rich, expensive (~70 EUR/year personal, ~99 EUR/year family), private (your file stays on your disk or OneDrive), no bank sync.
2. Google Sheets — free for personal Google accounts, shareable in real time, formula-capable (slightly behind Excel on the long tail), browser-based, no native bank sync.
3. Budget app — paid (~60-110 EUR/year), bank-synced via PSD2 aggregator, opinionated methodology, mobile-first, limited customisation.

The honest answer is rarely "one wins." Most disciplined personal-finance setups in 2026 use two of the three.

Side-by-Side Comparison Table

The hidden table row, often missed: dependency risk. Excel files keep working without Microsoft. Sheets keeps working without your subscription. A budget app dying takes your category structure, custom rules and historical context with it — as 25 million Mint users learned in March 2024.

Pricing Breakdown

Excel. Microsoft 365 Personal: ~70 EUR/year (or ~7 EUR/month) for one user, includes Word, Excel, PowerPoint, Outlook, OneDrive 1TB. Microsoft 365 Family: ~99 EUR/year for up to 6 users. Excel Online (browser, free with Microsoft account) works for basic budgeting. Standalone Excel 2024 perpetual licence: ~159 EUR one-off, no cloud features.

Google Sheets. Free with any Google account. Google Workspace personal tier is free; Workspace Business starts at ~5 EUR/user/month if you want a custom domain, but for personal-finance use this is unnecessary.

Budget apps. YNAB ~100 EUR/year. Monarch ~90 EUR/year. Rocket Money 60-130 EUR/year depending on tier. Cleo Plus ~70 EUR/year. Fina ~60-80 EUR/year. PocketSmith and Tiller (spreadsheet-app hybrids) 90-200 EUR/year.

Five-year total cost of ownership (single user, mid-tier choices):

• Excel only: ~350 EUR
• Sheets only: 0 EUR
• Sheets + budget app: ~450-500 EUR
• Excel + Sheets + budget app: ~800 EUR

If you already pay for M365 for work or family reasons, the marginal cost of Excel for budgeting is zero. Most disciplined personal-finance setups in 2026 settle on Sheets + a paid app, totalling ~90 EUR/year.

EU / PSD2 Specifics

Excel and Google Sheets have no native PSD2 connectivity. Both are spreadsheet tools, not regulated AISPs. To get bank data into either, you either:

1. Download CSV statements monthly from your bank and import (10-30 min per bank per month).
2. Use a paid PSD2 bridge service like Tiller (USD-based, US-bank-strong), Sheetgo, or a regional EU option that pushes bank data into Sheets/Excel via Google Apps Script or Power Query. These services typically cost 60-150 EUR/year and stack on top of your spreadsheet.
3. Use the GOOGLEFINANCE() function for live FX rates in Sheets — useful for multi-currency, but does not move bank balances.

Budget apps connect natively (via aggregator, not direct AISP licence in most cases). The PSD2 strong-customer-authentication (SCA) 90-day token refresh affects all of them; spreadsheets escape this only because they aren't connected to begin with.

Data residency. Excel files saved locally stay local. OneDrive files reside in Microsoft EU data centres if you're an EU consumer. Google Sheets data resides on Google infrastructure (the consumer SLA does not guarantee EU-only residency; Workspace Enterprise can). Budget apps mostly store data in the US.

For privacy hard-liners, Excel saved to a local drive (no OneDrive sync) is the only option of the three that keeps data fully off cloud infrastructure.

Polish Reader Angle

If you bank in Poland and invest through PL tax wrappers, here is the realistic distribution:

• PKO BP, mBank, ING, Santander Polska, Pekao all offer CSV/PDF statement download from their web banking. Excel and Sheets both import the CSVs (mBank's is the cleanest; PKO BP's needs reformatting). Budget apps offer direct sync for these.
• IKE, IKZE, PEA, ISA tracking — not supported by any budget app. Spreadsheet wins by default. A custom Sheets workbook with named ranges per wrapper, contribution limit guards (IKE limit 2026: 25,221 zł; IKZE: 10,089 zł, self-employed 15,134 zł) and Belka exemption flags is a 2-4 hour build that runs forever.
• Belka tax 19% / 12% — calculate in Excel/Sheets via formula. Budget apps show gross only.
• Polish treasury bonds (obligacje skarbowe) with their indexed-to-inflation series (EDO, COI, ROD, ROS, ROR) — spreadsheet only. No app handles them natively.
• PLN as primary currency — Excel and Sheets handle PLN natively as a number format. Budget apps default to USD or EUR with PLN as display.

For Polish-bank-first users who care about wrapper-native tracking, the realistic 2026 stack is: spreadsheet for the structural model + a tool that natively handles Polish banks for daily sync. Freenance sits in that second slot — EU-native, PL-bank-first, multi-currency from the start, with an AI cashflow companion that complements (rather than replaces) a spreadsheet's modelling depth. Spreadsheets are forever; an app saves you the daily reconciliation grind.

Migration Path

From Excel to a budget app: export your Excel workbook as CSV (one tab per account). Most budget apps accept it. You lose formulas, conditional formatting, your custom dashboards. Categories need remapping. Time: half a day.

From a budget app to Sheets: export the app's CSV. Build a Sheets workbook with: (1) Transactions sheet (raw import), (2) Categories sheet (mapping), (3) Budget sheet (envelopes/zero-based), (4) Net Worth sheet (account balances over time), (5) Dashboard sheet (charts pulling from above). Time: a focused weekend.

Between Excel and Sheets: save Excel as .xlsx, upload to Drive, open in Sheets. Most formulas survive. ARRAYFORMULA, GOOGLEFINANCE() and a few Google-specific functions don't exist in Excel; LET(), LAMBDA() and some array constructions are now in both. Test before you commit.

Common failure mode for spreadsheets: people build a beautiful month-1 workbook, then stop entering transactions in month 3, then "find it again" in month 7 with a year of gaps. Bank-synced apps solve this by removing the entry step.

Common failure mode for apps: people categorise religiously in month 1, accept the app's auto-categorisation in month 4, stop looking by month 8, and end up with a dashboard that shows everything but tells them nothing. Apps solve the entry problem; they don't solve the attention problem.

Use Case Showdowns

Solo person, tight budget, wants free

Winner: Google Sheets. Free, multi-platform, exportable. The cost is 1-2 hours/month of manual reconciliation.

Couple sharing household budget

Winner: Google Sheets (slight edge). Native real-time sharing, both parties can see and edit. Monarch and YNAB also handle this well, at ~90 EUR/year. If one of you is a spreadsheet person and the other isn't, the app wins on adoption.

Freelancer with irregular B2B income

Winner: spreadsheet (either). Income smoothing, quarterly VAT modelling, ZUS deductions, IKE-Self-Employed limit tracking — all model-driven. No app handles all of these.

Multi-account investor with EU brokers

Winner: budget app for daily balances, Sheets for tax modelling. Use both. The app shows your net worth daily; the spreadsheet calculates your post-Belka return.

Heavy power user, custom dashboards

Winner: Excel. The deepest formula library, the best charting customisation, the most flexibility. Power Query for ETL, PivotTables for analysis, dashboards that look like Bloomberg terminals if you put in the hours.

Beginner who has never tracked money

Winner: budget app. Lower activation energy, methodology baked in, mobile-first. Spreadsheets reward people who already think in tables.

Privacy-conscious, EU-data-residency required

Winner: Excel saved locally. No cloud, no aggregator, no third party. The cost is convenience.

Digital nomad with three currencies and four banks

Winner: tie. Spreadsheet for the model, app for the daily sync. Neither alone is enough.

What's Missing in All Three

• Native AI cashflow forecasting. Spreadsheets can do linear projection trivially; Monte Carlo with income volatility is a multi-hour build. Apps advertise "AI forecast" but mostly deliver linear extrapolation. True LLM-driven "you can move 400 EUR to IKE-Obligacje without breaking November rent" is not yet shipped at consumer scale.
• Polish tax wrapper logic out of the box. Build it yourself in a spreadsheet, or wait for an EU-native app to ship it.
• Reliable PSD2 connectivity for the long tail of EU banks. All three have gaps; aggregators have gaps.
• Receipt OCR with reliable categorisation. Spreadsheets don't have it; apps have rudimentary versions.
• Cross-tool sync. Edit in Sheets, see it in app — not really. Tiller is the closest; it works mostly with US banks.

Worked Example — Tomek, 41, Software Engineer + B2B Consultant, Kraków

Tomek runs his main income through a B2B contract via mBank Firma. His spouse has a PKO BP joint personal account. They co-own a mortgaged apartment (PKO BP). He invests via Trade Republic (DCA on a global ETF), holds an IKE-Obligacje and an IKZE-Obligacje, runs a 6-month emergency fund in Polish treasury bonds (EDO series) and keeps ~2,000 EUR liquid in Revolut for travel.

Setup with Excel only. Tomek builds a 7-tab workbook: Income, Expenses, Mortgage, Investments (sub-tabs per broker), IKE/IKZE (sub-tab per year, with contribution limit guards), Bonds (with indexation formulas), Dashboard. He spends 14 hours over two weekends building it. Monthly maintenance: ~2 hours, all manual data entry.

Setup with Sheets + budget app. Tomek keeps the same workbook structure in Sheets (1 hour to migrate). He adds a budget app (Monarch) for daily bank sync: ~90 EUR/year. The app handles his mBank, PKO BP and Santander Polska automatically; he manually enters Trade Republic and the IKE/IKZE balances monthly. Monthly maintenance: ~30 minutes.

Setup with budget app only. Tomek tries it. The app handles transactions cleanly but cannot model his IKE contribution limit, his EDO indexation formula, his quarterly VAT or his post-Belka net return. He concludes the app alone isn't enough.

One-year retrospective. Tomek's hybrid setup (Sheets + Monarch) saves him ~18 hours/year vs. spreadsheet-only. Total annual cost: ~90 EUR. Worth it. He keeps the spreadsheet as the structural model and the app as the live feed.

Friction points he logs: Monarch's PLN display is FX-converted from USD base — historical net worth in PLN looks falsely volatile; the IKE-Obligacje is invisible to Monarch; no app calculates Belka.

Verdict by User Type

FAQ

Can I make a spreadsheet auto-sync to my bank? Sort of. Tiller (US-strong), Sheetgo and a few EU-regional services bridge PSD2 to Sheets/Excel via Apps Script or Power Query. Costs another 60-150 EUR/year. Reliability is similar to standalone apps — same aggregators underneath.

Will I lose data switching between Excel and Sheets? Mostly no. .xlsx is the lingua franca. A few advanced functions (LAMBDA in older Excel, GOOGLEFINANCE in Sheets) don't survive. Charts mostly survive. Pivot tables mostly survive. Test before you commit.

Which is best for couples? Google Sheets for real-time sharing if both partners are comfortable with spreadsheets. A budget app (Monarch in particular) if one partner isn't.

Is there a free Excel? Excel Online (browser, free with Microsoft account) covers basic needs. The desktop app requires Microsoft 365 (~70 EUR/year) or a perpetual licence (~159 EUR one-off).

Which is best for Polish tax wrappers? A spreadsheet, every time. No mainstream budget app understands IKE, IKZE, PEA or Polish treasury bonds natively. You build the wrapper logic yourself, once, and reuse it forever.

Can AI help me with a spreadsheet budget? Yes — Copilot in Excel, Gemini in Sheets. Both can draft formulas, summarise transactions, suggest categorisation. None handles cashflow forecasting better than a well-modelled spreadsheet. Treat AI as a faster-spreadsheet-typist, not a replacement methodology.

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Sources (named, no URLs): Microsoft Corporation (Microsoft 365 / Excel); Google LLC (Google Sheets / Workspace); Intuit Inc. (Mint sunset, March 2024); YNAB LLC; Monarch Money, Inc.; Rocket Money (Rocket Companies); Tiller (Tiller Money LLC); Sheetgo; Plaid Inc.; Salt Edge Inc.; PSD2 directive (Directive (EU) 2015/2366); EBA RTS on SCA; Polish Ministry of Finance (IKE, IKZE limits and Belka tax rates).

App features evolve. Test free tier first.