Financial Glossary
Trailing Twelve Months (TTM)
Trailing Twelve Months (TTM) is a financial measurement window covering the most recent 52-week period ending on the date of analysis, regardless of where fiscal or calendar year boundaries fall. It is constructed by taking the most recent full fiscal year's figures, adding the current year-to-date period, and subtracting the equivalent prior-year YTD period. TTM normalizes for partial-year distortions, making it the preferred basis for valuation multiples (EV/Revenue, EV/EBITDA, P/E) and lender underwriting. Because it updates continuously, TTM captures performance more recently than an annual report and more completely than a single quarter.
Problem & Application
A campground business completed its fiscal year in December with $1.2 million in revenue. By the following June, it has added $700,000 in YTD revenue against $580,000 in the same prior-year period. TTM revenue is $1.2 million plus $700,000 minus $580,000, equaling $1.32 million -- reflecting the growth realized in the intervening six months. An acquirer using December annual revenue would undervalue the business by $120,000 on the top line before applying any multiple. For a business trading at 3x revenue, that gap translates to a $360,000 difference in valuation. Sellers preparing for a transaction should present TTM financials updated through the most recent closed month, and they should be prepared to explain any seasonality that makes the trailing period look particularly strong or weak relative to an annualized run-rate.
In Short
TTM is a useful metric for tracking consistent business performance over time, offering a more holistic view of a company’s financial health and enabling better forecasting and strategic planning.
How it works
Mechanically, the standard "stub" formula is: TTM = Most Recent Fiscal Year + Current YTD (stub) − Prior-Year YTD (same stub). For metrics drawn from the income statement or cash flow statement, you can equivalently sum the last four reported quarters. A frequent error is applying this rolling logic to balance sheet items: assets, liabilities, and equity are point-in-time snapshots, so you use the most recent balance directly rather than adding four quarters together. Analysts also avoid mixing a TTM numerator (e.g., trailing net income) with a forward or year-end denominator, which produces a distorted multiple.
Calculating TTM EBITDA for an RV park acquisition
A buyer is evaluating an RV park as of September 30, 2025. The park's last completed fiscal year (ending December 31, 2024) produced EBITDA of $480,000. Through the first nine months of 2025 (Jan-Sep), EBITDA reached $410,000. Over the same nine-month window in 2024, it earned $355,000. TTM EBITDA = $480,000 + $410,000 - $355,000 = $535,000. The peak summer season landed inside the current stub, so the trailing figure captures roughly $55,000 of real growth that the stale 2024 annual number misses. At a 4x EBITDA multiple, that uplift is worth about $220,000 in enterprise value. The same approach works for top-line occupancy revenue at a campground or a short-term-rental portfolio, where seasonality concentrated in a few months would otherwise skew any single quarter or calendar-year snapshot.
Frequently asked
What is the difference between TTM and LTM?
There is no difference. TTM (trailing twelve months) and LTM (last twelve months) are interchangeable terms for the same metric: the most recent 12 consecutive months of financial data. Investment bankers tend to favor "LTM," while public-company filings and equity research often use "TTM," but both describe an identical rolling annual window ending on the analysis date.
Is TTM the same as the fiscal year or year-to-date?
No. A fiscal year is a fixed 12-month period ending on a set date, and year-to-date covers only the months elapsed since that period began, so it's usually shorter than a year. TTM always spans a full 12 months but rolls forward each quarter, so it rarely aligns with the fiscal-year boundary and stays more current than either alternative.
Can I calculate TTM for balance sheet items?
Not by summing quarters. Balance sheet accounts like cash, debt, and equity are point-in-time snapshots, so adding four quarters would overstate them. For balance sheet figures, use the most recent reported balance directly. TTM summing applies only to flow metrics from the income statement and cash flow statement, such as revenue, EBITDA, or net income.