The NFC statistical table provides aggregate measures of corporate bond spreads and yields for Australian resident non-financial corporations. The estimates are derived from the spreads to swap of a sample of fixed-rate bonds issued in Australian dollars, US dollars and euros, where the foreign currency-denominated bond spreads of individual bonds are hedged into their Australian dollar-equivalent spreads using cross-currency basis swaps and other relevant interest rate adjustments. Yields and spreads on bonds with embedded options are adjusted for the value of these options using Bloomberg's option adjusted spread (OAS) estimates. Simple spreads (i.e. not OAS) are used for bonds with make-whole call options only. Data on underlying bond prices, spreads, bond attributes and cross-currency hedging variables are sourced from Bloomberg. Prior to 2009, the sample is supplemented by bond prices and spreads for fixed-rate Australian dollar denominated bonds sourced from UBS AG, Australia Branch. Aggregate measures are reported separately for bonds with broad A (A+, A or A-) and BBB credit ratings (BBB+, BBB or BBB-). Individual security ratings are used if available and issuer ratings otherwise. All credit ratings are sourced from Standard and Poor's (S&P). The credit spreads to Australian dollar swap rates reported in the table are weighted averages of the individual bonds estimated for each tenor (3, 5, 7 and 10 years). The 3-year spread is to the quarterly swap rate at that tenor, while spreads at other tenors are to the corresponding semiannual swap rates. The weights of the underlying bonds are determined by the distance between their residual maturities and the target tenor, and are calculated using a Gaussian kernel with a standard deviation of 1.5 years centred at the target tenor. Aggregate credit spreads and weighted average effective tenors are reported separately for bonds with broad A and BBB credit ratings. The spread to Australian Commonwealth Government securities (CGS) rates are calculated by adding to the credit spread to swap the corresponding swap to CGS spread for each target tenor (the quarterly swap rate for the 3 year tenor and the semiannual rate otherwise). Yields are calculated by adding the aggregate credit spread to swap to the corresponding swap rate at each target tenor. The number of valid bond observations in the sample (i.e. observations with reported credit spreads, face values and credit ratings) are reported for buckets of residual maturities for 1 to 4 years, 4 to 6 years, 6 to 8 years and 8 to 12 years. The monthly figures shown are for the last business day of the month. For more information on the construction of these aggregate measures of credit spreads see Arsov I, M Brooks and M Kosev (2013), 'New Measures of Australian Corporate Credit Spreads', RBA Bulletin, December.