The lender has cut rates by up to 0.45 per cent with some of the biggest reductions in the higher LTV areas.
Selected first-time buyer, house purchase and shared equity rates are being reduced by up to 0.40 per cent.
Examples include the two-year fix at 75 per cent LTV with a £999 fee reduced by 0.40 per cent to 1.59 per cent.
At 90 per cent LTV the two-year fixes have been cut by 0.25 per cent, with the £999 fee deal down to 3.24 per cent and the fee-free version reduced to 3.49 per cent.
And the five-year fixes at the same LTV have been cut by 0.1 per cent to 3.44 and 3.64 per cent respectively.
From the remortgage range a number of products will be reduced by up to 0.45 per cent including the five-year fixes at 85 per cent LTV with the £999 fee version down to 2.79 per cent and the no fee edition at 2.99 per cent.
At the other end of the spectrum at 60 per cent LTV the mutual now has products at 1.14 per cent with a £1,499 fee and 1.19 per cent with a £999 fee.
Existing borrower homemover, further advance and product transfer deals are also being trimmed in the overhaul.
Nationwide will be also reducing selected rates on its green additional borrowing range by up to 0.35 per cent. And its later life mortgage range will have rates reduced as well.
Nationwide director of mortgages Henry Jordan said: “These latest rate reductions showcase to borrowers that we want to continue offering some of the most competitive mortgage products on the market, as we look to support as many people as possible buying a new home or remortgaging their existing home.”