Monthly vs Annual Accounting — Which is Better for Your NZ Small Business?
Complete comparison of monthly and annual accounting services for NZ small businesses. Pricing, pros and cons, real examples, and how to choose the right option for your situation.
One of the first big decisions every NZ small business owner has to make is how they'll handle their accounting — do you pay an accountant every month for ongoing help, or just pay once a year at tax time? This monthly vs annual accounting question is one we get asked all the time at Elite Taxation. Both options work — but they're completely different in cost, level of support and what you actually get. This guide breaks down both models in plain English so you can pick what's right for your business. Written by Auckland-based accountants at Elite Taxation who offer both service models to 500+ NZ businesses.
1What is Monthly Accounting?
Monthly accounting means you pay your accountant a fixed monthly fee — starting from around $125 to $150 per month for smaller businesses, though depending on your size and complexity it can go to $1,000 or more — and in return they handle everything for you throughout the year. Not just tax time. Every month.
Think of monthly accounting as having an accountant on retainer. They're always available. Your books get updated regularly. Your GST returns get filed on time. And when you need to make a business decision — like whether to buy new equipment or hire someone — they can actually help because they already know your numbers.
What's Usually Included in Monthly Accounting
Most Auckland accounting firms including Elite Taxation include the following in their monthly package:
- Xero or MYOB setup and management — your accounting software is properly configured and your accountant has access to review everything.
- Monthly or two-monthly GST returns — no more scrambling to work out what you owe IRD.
- Bank reconciliation review — someone checking your transactions are coded correctly.
- Payroll and Payday Filing — if you have staff, PAYE and KiwiSaver handled every payday.
- Annual tax return (IR3 or IR4) — included in the fee, not extra at year end.
- Provisional tax calculations and reminders — so you never miss a payment date.
- Regular financial reports — profit and loss, cash flow, balance sheet — sent monthly or quarterly.
- Direct access to your accountant — phone, WhatsApp, email — quick answers when you need them.
- Tax planning and business advice — proactive suggestions to reduce your tax bill legally.
- IRD correspondence handling — if IRD contacts you, your accountant deals with them.
2What is Annual Accounting?
Annual accounting is the traditional way — you handle your own books throughout the year, then hire an accountant once a year at tax time to prepare your financial statements and file your tax return. Simple, cheaper upfront, but with a lot less support.
Most annual accounting arrangements are one-off engagements. You give your accountant a shoebox of receipts (or Xero access) around June or July after the financial year ends 31 March, they clean it all up, prepare the accounts, file with IRD, and send you a bill. Then you don't hear from them until next year.
What's Usually Included in Annual Accounting
An annual accounting service typically covers just the year-end work:
- Preparation of annual financial statements — profit and loss and balance sheet for the year.
- Annual tax return — IR3 for sole traders, IR4 for companies, IR6 for trusts.
- One-off review of your books — the accountant will check what you've done and fix any obvious mistakes.
- Depreciation schedule updates — assets tracked and claimed correctly.
- End-of-year tax advice — some basic suggestions but nothing proactive during the year.
- Filing with IRD — the tax return gets lodged before the deadline.
3The Key Differences Side by Side
Here's a clear comparison of both models so you can see exactly what you get with each:
| Feature | Monthly | Annual |
|---|---|---|
| Annual Cost | $1,500 – $6,000/year | $800 – $2,000/year |
| Payment | Fixed monthly (predictable) | One-off yearly fee |
| GST Returns | Included — accountant files | Not included — you do it |
| Bookkeeping | Reviewed monthly | Reviewed once a year |
| Support Available | Anytime — direct access | Only at tax time |
| Tax Planning | Proactive throughout year | Reactive at year end only |
| Financial Reports | Monthly / quarterly | Once a year only |
| Payroll | Usually included | Not included |
| Xero Included | Often included in fee | Separate subscription |
| IRD Deadline Reminders | Handled by accountant | Your responsibility |
| Best For | Growing / GST-registered / companies | Very small / sole traders / simple |
4Pros and Cons of Monthly Accounting
Pros of Monthly
- Fixed budget, no surprises — same fee every month, easy to plan cash flow.
- Always compliant — GST filed on time every period. No penalties.
- Real-time financial visibility — you know your numbers every month, not just once a year.
- Better tax planning — your accountant can suggest tax planning strategies during the year, when there's still time to act.
- Direct access when needed — quick answers via phone, email or WhatsApp. No hourly billing for a 5-minute question.
- Peace of mind — no year-end scramble, no missing receipts, no last-minute stress.
- Payroll handled — if you have staff, PAYE and KiwiSaver done every payday without you touching it.
Cons of Monthly
- Higher total annual cost — you pay more overall than a one-off annual arrangement.
- Ongoing commitment — you're locked into monthly payments (though most firms let you cancel with 30 days notice).
- Paying for support you don't use in a quiet month — some months you might not need much from your accountant, but the fee stays the same. That said, getting things done right from the start almost always costs less than fixing DIY mistakes later, the same way building a wall properly the first time costs less than paying someone to knock it down and redo it.
5Pros and Cons of Annual Accounting
Pros of Annual
- Lower upfront cost — pay once a year. Total cost is usually less than monthly (though not always after add-ons).
- No monthly commitment — you can shop around each year for the best price.
- Good for very simple businesses — if you have 20 transactions a year, monthly service is overkill.
- Suits business owners who love bookkeeping — if you actually enjoy doing your own books, annual works.
Cons of Annual
- No help during the year — problems compound because no one's watching.
- GST is your responsibility — filing returns yourself takes time and mistakes cost money.
- Tax planning happens too late — by the time you meet in July, the tax year is over.
- Year-end scramble — collecting a year's receipts and statements is stressful.
- Hidden costs add up — extra hourly rates for anything outside the annual package.
- Missed deductions — receipts get lost, expenses forgotten. Costs real money.
- Late filing risk — late info to your accountant means IRD penalties.
6Who Should Choose What?
Choose Monthly If...
- You're GST-registered — turnover over $60,000. Returns every 2 months are easier to hand off.
- You have staff — payroll compliance is complex. PAYE, KiwiSaver, Payday Filing all need to be right.
- You run a company (Ltd) — more compliance requirements than sole traders.
- Your business is growing — you need real-time numbers for hiring, investment and pricing decisions.
- You value your own time — your own books take 5-10 hours/month. At $50/hour, that's $500 already spent.
- You want peace of mind — no year-end panic, no IRD surprises, no late fees.
- You have complex tax situations — investments, rentals, multiple income sources.
Choose Annual If...
- You're a very small sole trader — under $30,000-40,000/year, few transactions.
- You're not GST-registered — turnover under $60,000, no GST complications.
- You have no staff — no payroll to worry about.
- Your business is simple — one income stream, straightforward expenses.
- You're confident with your own bookkeeping — you keep good records and enjoy the work.
- You just need a tax return filed — no advice needed, just compliance.
7Real NZ Examples — Which Model Works Best?
Based on real client situations from our Auckland team:
Tom, Tradie Plumber, West Auckland
Tom is a sole trader plumber with revenue of $95,000/year. GST-registered. Has a company van, tools worth $8,000, and does 15-20 jobs a month. Uses Xero. Monthly accounting is the clear winner here — his GST returns need filing every 2 months, he needs vehicle expenses tracked properly, and tax planning during the year saves him more than the monthly fee costs. Elite Taxation charges him $250/month = $3,000/year for the full service.
Winner: MonthlySarah, Weekend Etsy Seller
Sarah has a full-time job at an office. Sells handmade jewellery on Etsy as a side hobby. Made about $12,000 last year. Not GST-registered (under $60k). No staff. Simple expenses — materials, shipping, Etsy fees. Annual accounting works fine — her accountant prepares her side business income for her IR3 return once a year for around $500. Monthly would be overkill for her situation.
Winner: AnnualPriya, Café Owner with 4 Staff, Mount Wellington
Priya runs a café with 4 casual staff. Revenue $340,000/year. GST-registered, filing 2-monthly. Needs payroll every fortnight — PAYE, KiwiSaver, Payday Filing. Complex expenses — food supplies, equipment, rent, staff. She needs monthly accounting — the compliance alone (GST + payroll + Payday Filing) makes annual impossible. Elite Taxation charges her $450/month = $5,400/year. Absolute must-have.
Winner: MonthlyRaj, Property Investor with 8 Rentals
Raj owns 8 rental properties across Auckland, built up over 12 years alongside his regular day job. Rental income around $210,000/year gross. With that many properties there's a lot to track — mortgage interest, rates, insurance, repairs, and property manager fees across each one. Not GST-registered (residential rent is exempt), but the volume of transactions and ongoing tax planning around interest deductibility rules make regular support genuinely worth it. Elite Taxation runs a quarterly review model for property investors at $250/month = $3,000/year, which keeps him on top of everything without needing full monthly bookkeeping.
Winner: Quarterly/Monthly8Common Mistakes to Avoid
Choosing Annual to Save Money — Then Paying More Later
This is the most common mistake. Business owners pick annual thinking they'll save money — but they end up paying hourly rates for extra work, penalties for late GST, and missed deductions. Often the total annual cost is higher than monthly would have been.
Not Counting the Value of Your Own Time
If you spend 8 hours a month on your books, that's 96 hours a year — nearly 3 full working weeks. At even $40 an hour of your time value, that's $3,840 you're already spending on your own accounting. Monthly accounting costs less than that most of the time.
Assuming All Monthly Accountants Are the Same
Not all monthly packages include the same things. Some charge extra for payroll, some don't include Xero subscription, some don't include GST filing. Always get a written list of what's included before signing up.
Sticking with Annual When Your Business Has Outgrown It
Business grows, GST kicks in, staff get hired — but the accountant is still annual. Now the owner is scrambling to keep up with compliance and making mistakes. Review your accounting setup every year.
Not Asking About Included Services
Some monthly firms include Xero, some don't. Some include unlimited phone/email support, some cap it. Always ask: "What exactly is included in the monthly fee, and what costs extra?"
9How to Switch from Annual to Monthly
If you decide monthly is the right move, switching is straightforward. Here's how it works at most Auckland accounting firms including Elite Taxation:
Get a quote
Most firms offer a free consultation to understand your business and give you a fixed monthly quote.
Choose your start date
Best time to switch is at the start of a new financial year (1 April) but you can start any time.
Transfer Xero access
If you already use Xero, just add your new accountant as an Adviser user.
Handover from old accountant
Most accountants provide the previous year's financial statements and tax return copies to your new firm.
Initial catch-up
Your new accountant will review your books and get everything up to date. May be a small one-off catch-up fee.
Ongoing monthly service starts
From your start date, you're on the monthly package.
Shubam Sharma · Director & Founder, Elite Taxation
Shubam Sharma is the Director and Founder of Elite Taxation, an Auckland-based accounting firm offering both monthly and annual accounting services to 500+ NZ small businesses. AUT Graduate, CPA Australia (in progress), IRD-Registered Tax Agent (IRD No. 135-715-344). Specialises in helping small business owners choose the right accounting setup based on their actual needs — not upselling them.
