Laminated hard film and cutting tool

A laminated hard coating, comprising,

• alternately laminated one or more layers A and one or more layers B,
• wherein:
• each layer A independently comprises (MaAlbCrcTad)(BxCyNz) and satisfies the relationships of
• 0≤a≤0.35, 0.05≤d≤0.35,
• 0≤x≤0.15, 0≤y≤0.50,
• a+b+c+d=1, and x+y+z=1,
• wherein M is at least one element selected from the group consisting of V, Nb, Mo, and W;
• a, b, c, and d represent the atomic ratios of M, Al, Cr, and Ta, respectively;
• and x, y and z represent the atomic ratios of B, C and N, respectively;
• each layer B independently comprises (TiαSiβ)(Bx′Cy′Nz′)and satisfies the relationships of
• 0.05≤β≤0.35,
• 0≤x′≤0.15, 0≤y′≤0.50,
• α+β=1, and x′+y′+z′=1,
• wherein α and β represent the atomic ratios of Ti and Si, respectively;
• and x′, y′, and z′ represent the atomic ratios of B, C and N, respectively;
• and
• at least one of the one or more layers B has a thickness of 80 nm or less.