TTM (trailing twelve months)
Learn what TTM (trailing twelve months) means, why it matters, and how to calculate it for your business.
November 2023 | Published by Xero
Published Thursday 23 July 2026
Table of contents
Key takeaways
- TTM stands for trailing twelve months, the past 12 months of consecutive financial or performance data for your business.
- TTM gives you a current view of performance and smooths out seasonal ups and downs and one-off events.
- You can calculate TTM by adding your latest full fiscal year and current year-to-date figures, then subtracting the prior-year year-to-date figures.
- TTM looks backward, so it works best alongside forward-looking measures rather than on its own.
Before you can use trailing twelve months figures, it helps to know exactly what the term covers and how it differs from other reporting periods.
TTM (definition)
TTM (trailing twelve months) means the past 12 months of consecutive financial or performance data for a business. Another name for it is the last twelve months (LTM), and the two terms mean the same thing.
TTM differs from year to date (YTD), which covers the period from the start of the current fiscal year to today. YTD can be less than 12 months, while TTM is always a full 12 months.
TTM solves a common problem with fiscal-year reporting, so it's worth understanding why so many small businesses rely on it.
Why is TTM used?
TTM gives you a current picture of how your business is performing. Annual data from your most recent fiscal year can be almost a year out of date, and TTM uses the most recent 12-month period instead so the numbers reflect where you are now.
It also smooths out the ups and downs that come with seasonal trading or one-off events. If revenue climbs over summer or dips after an unusual quarter, TTM balances those swings across a full year and keeps your view steady and current.
Once you have TTM figures, you can put them to work in several practical ways across your business.
How is TTM used?
Small businesses use TTM to share accurate, up-to-date figures with lenders and investors. External parties can assess the last consecutive 12 months without waiting for your next fiscal reporting period to close.
You can also use TTM for ongoing planning, spotting trends, tracking growth, and comparing your business against competitors. It's a clear way to see how close you are to hitting your key performance indicators (KPIs) over the trailing 12-month period.
The figures behind TTM come from the financial reports you already produce, so you rarely need anything new to get started.
Where do you find TTM data?
You'll find the data you need across your regular financial reports. Balance sheets, income statements, and cash flow statements can all supply the figures for TTM reporting, such as:
- TTM revenue: the total revenue earned over the trailing 12 months
- TTM cash flow: the money moving in and out of the business over the trailing 12 months
- TTM accounts receivable turnover ratio: how many times an accounts receivable balance is collected over the trailing 12 months
There are a few ways to work out TTM, and the right one depends on the data you have to hand.
How do you calculate TTM?
You can use the most recent complete 12 months, the last 4 complete quarters, or a simple formula that draws on figures you already report. The formula adds your latest full fiscal year and your current year-to-date total, then subtracts the prior-year year-to-date total: TTM = latest full fiscal year + current year-to-date − prior-year year-to-date.
To calculate TTM with the formula, follow these 3 steps:
- Take the total from your latest full fiscal year.
- Add your current year-to-date figure.
- Subtract the year-to-date figure from the same point in the prior year.
Here's how that looks for TTM revenue at a Canadian small business:
- Latest full fiscal year revenue: $120,000
- Plus current year-to-date revenue: $35,000
- Minus prior-year year-to-date revenue: $30,000
- TTM revenue: $125,000
TTM is a useful measure, but it has boundaries you'll want to keep in mind before you lean on it.
What are the limitations of TTM?
TTM is backward-looking, so it tells you what has already happened rather than what's coming next. A single large sale, a refund, or another one-off event can still skew the picture across the 12-month window.
That's why TTM works best alongside other measures, such as forecasts and budgets. Pairing your trailing figures with forward-looking numbers gives you a fuller, more balanced view of your business.
Keeping an eye on TTM is far easier when your financial data stays current and organized in one place.
Track your business performance with Xero
With your reports and cash flow in one place, you can pull trailing twelve months figures whenever a lender, investor, or planning session calls for them. Start with a plan that fits your business and get one month free.
FAQs on TTM
Here are answers to some frequently asked questions about TTM to round out the essentials.
What does TTM stand for?
TTM stands for trailing twelve months. It's sometimes written as LTM, or last twelve months, and both refer to the same 12-month span.
How do you calculate TTM?
Add your latest full fiscal year total to your current year-to-date figure, then subtract the prior-year year-to-date figure. You can also add up the most recent 4 complete quarters if that data is easier to reach.
What is the difference between TTM and YTD?
YTD covers only the stretch from the start of your current fiscal year to today, so it can be shorter than a year. TTM always spans a full, rolling 12 months.
When should you use TTM instead of annual figures?
Reach for TTM when your last fiscal year feels out of date or you need a current read partway through the year. Annual figures suit formal year-end reporting, while TTM keeps your view fresh in between.
These related glossary terms help you build on what you've learned about TTM.
Related terms
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Disclaimer
This glossary is for small business owners. The definitions are written with their requirements in mind. More detailed definitions can be found in accounting textbooks or from an accounting professional. Xero does not provide accounting, tax, business or legal advice.